Solve the Problem of 'Can't Reach' or 'Can't Turn'! Reliable Compact Tools

Hand tools such as wrenches, screwdrivers, and socket wrenches can handle most tasks once you have a basic set. However, there are many cases around the vehicle body and engine where space is limited, and standard-sized tools cannot access the area. In such situations, special tools like ultra-short sockets and bits, unique hex wrenches, and small ratchets come in handy. Even if you don't use them often, they prove to be incredibly powerful when the moment of truth arrives. Here, we introduce compact tools that make working in tight spaces more comfortable.

Dual-purpose sockets that can approach narrow gaps with overwhelming low profile

Even if you have many sockets lined up in your toolbox, have you ever felt, "If only it were a few millimeters thinner, it would reach"? In such situations, the STRAIGHT FLAG Ultra-Short Socket Set is useful.
The biggest feature is its compactness, with a total length of just 16mm. It is overwhelmingly shorter than standard sockets and is designed to be easy to use even in limited spaces.
What's even more convenient is its 2-way structure. Not only can it be used with a 1/4-inch drive ratchet handle, but it can also be combined with a 14mm box-end wrench or gear wrench on the outer hexagonal part, allowing it to function as an ultra-thin 16mm socket wrench.
In tight spaces where the swing angle of the handle is limited, you might have to turn a spanner or box-end wrench a little bit and then reposition it repeatedly. However, if you combine this socket with a gear wrench, you can turn it continuously, significantly improving work efficiency. It is truly a trump card item that can access places that standard-sized tools cannot reach.

The "FLAG Ultra-Short Socket Set 4-Piece 6-Point" sold at the tool shop STRAIGHT. The 4 sizes set on a dedicated rail are 8mm, 10mm, 12mm, and 14mm.

The bottom of the socket has a 1/4" (6.3mm) square hole and a 14mm hexagonal part. A lock ring is incorporated into the hexagonal part so that it does not easily come off when set in a box-end wrench or gear wrench.

The total length of the socket itself is 16mm, and depending on the thickness of the gear wrench combined, it can be used as a ratchet wrench that is significantly thinner than a ratchet handle with a square drive.

Even when combined with a 1/4-inch drive ratchet handle, the advantage of the 16mm total length thin socket is utilized.

Both socket sizes are 14mm, but the difference between a general 3/8-inch socket + ratchet handle and the STRAIGHT short socket is overwhelming. While the combination on the left is for regular use, there should be times when the short type on the right comes in handy.

It's a socket for a ratchet wrench, yet shorter than the short axis of an L-shaped wrench!?

Koken, known as a specialized manufacturer of socket wrenches, has a diverse lineup of sockets for various purposes. Among them, the RS3012M/8-L25 is worth noting for work in narrow spaces. This is the product number for an 8-size set, and each socket can also be purchased individually.
This is a 3/8-inch drive hex bit socket, and its biggest feature is its short total length of 25mm. Since most general hex bit sockets have a total length of about 50mm, it is only about half that length. In terms of shape, the socket drive part looks larger than the hex axis, giving it a unique form different from general hex bits.
By integrating the bit part and the drive part, unnecessary length is eliminated, making it extremely compact even when attached to a ratchet handle. Depending on what you compare it to, the total height can be kept lower than the short axis side of an L-shaped hex wrench.
L-shaped wrenches are simple and convenient, but depending on the installation location of the cap bolt, you may have to reposition the wrench repeatedly to turn it. In contrast, when combined with a ratchet handle, you can turn it continuously, which greatly increases work speed.
Also, because the hexagonal part is short, the axis is less likely to twist when torque is applied, and force is not lost, so it is also effective for loosening tightly fastened cap bolts.
It can be said that this is an item worth adding to your toolbox, even if you already have general hex bits.

The contents of the Koken RS3012M/8-L25 hex bit socket set are 8 pieces: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, and 12mm. The 3012M series, which has an integrated ratchet handle drive part and hex axis, also comes in total lengths of 52mm, 62mm, and 75mm.

The total length of a general hex bit is around 50mm, and the form of the RS3012M-L25, which is only half that, is also humorous. If the ratchet handle drive part and the hex axis were separate parts, a mating length would be essential, but by integrating both, shortening is possible.

Even when attached to a ratchet handle, it is the same length as the short axis of an L-shaped wrench, and you can turn cap bolts continuously, which will undoubtedly increase work efficiency significantly.

A unique combination of a hammerable handle and a through-type ultra-short bit

When you want to turn a cap bolt installed in a narrow space, you may struggle because you cannot secure a sufficient swing angle even if an L-shaped wrench fits. To deal with such situations, the WISE Pierce Ball Wrench was created with a unique concept.
Its feature is a unique structure in which extremely short hex axes are passed through both ends of a rod-shaped handle. Unlike general L-shaped wrenches, it does not have a long hex axis, so the tool itself is less likely to bend or twist, making it easier to apply large force.
This handle has the strength to withstand hammer blows, and it can also be used to loosen stuck cap bolts. Its reliability when encountering a stuck cap bolt in a narrow space is a major attraction.
Also, the through-hex axis is press-fitted with a 15-degree offset relative to the center of the handle. Therefore, by using it alternately while flipping it over, it is possible to continue turning the bolt even in places where only a swing angle of about 30 degrees can be secured. Furthermore, one side of the hex axis has a ball-point shape, so it can be used even when the wrench is tilted relative to the bolt. It can truly be called a special tool born for work in narrow spaces.

The Pierce Ball Wrench has a unique shape for a hex wrench, with hex bits press-fitted into both ends of a plate-like body. Like a box-end wrench, the size of the hexagonal part differs at both ends.

The hex axis passing through the handle is straight on one side and ball-point on the other. When turning a cap bolt with a hex wrench, you cannot reposition it unless you turn the bolt 60° in one stroke, but since the bit of the Pierce Ball Wrench is rotated 15° relative to the center line of the handle, you can turn the bolt by swinging the handle 30° and flipping it over. In other words, it is easy to work even in a narrow space.

Because the hexagonal part is shorter than a general L-shaped wrench, it is less likely to twist even when strong torque is applied, and the handle part allows for impact, so you can loosen it with a "bang!" like an impact tool, which is also effective for stuck bolts.

A round-shaped ratchet wrench that fits easily in the palm of your hand

Ratchet handles are convenient tools, but there are situations where the handle is more of a hindrance than the head part, making it unusable. In such cases, the STRAIGHT Finger Tip Ratchet is effective.
This tool does not have a handle like a general ratchet, and is characterized by a compact design consisting only of a ratchet head. It has a 3/8-inch drive on a 36mm diameter circular body, and is operated by pinching it with your fingertips.
Its size is small enough to fit in the palm of your hand, and it can be used even in places where a normal socket wrench cannot enter. The appeal is that as long as you can secure space to insert the socket, you can work while avoiding surrounding obstacles.
Inside the head, a 72-tooth ratchet gear is built in, and the ratchet mechanism operates with a swing angle of just 5 degrees. Because you can turn bolts continuously even in limited spaces, the workability in narrow spaces is better than you can imagine.
Since there is no handle, you cannot apply large torque, but it is a convenient item that you won't want to let go of once you use it.

The STRAIGHT Finger Tip Ratchet, which is 36mm in diameter and fits easily in the palm of your hand. The rotation direction is switched with the lever on the top surface.

It is this size because if the diameter is made too small, it is difficult to grip and rotational torque is not transmitted, but structurally, it is like removing the handle part from a ratchet handle and leaving only the 72-tooth ratchet head.

It is suitable for uses such as loosening the first turn of a tightened bolt with a box-end wrench and then using it for fast turning, or conversely, performing the final tightening with a box-end wrench after temporarily tightening it with the fast-turning ratchet function. If the torque is low, this ratchet alone may be sufficient.

The more tool variations you have, the more diverse situations you can handle

By having standard-sized tools, you can handle most maintenance. However, in actual maintenance sites, you often encounter situations where you think, "Just a little more..."
"Just a little more..." can mean cases where the tool is too long to fit, where a swing angle cannot be secured, or where the handle interferes and prevents work. When the tool is too long, special tools such as ultra-short sockets, short bits, and small ratchets are a big help. If you have multiple tools with different total lengths, you may be able to break through the situation by trying another tool even if one method fails.
When you keep working on motorcycles, there are moments when you think, "A bolt I thought was absolutely impossible turned." That sense of accomplishment is one of the real thrills of DIY maintenance. Tools are not just work implements, but also options for problem-solving. That is why I recommend that you collect not only standard tools but also tools with special sizes and structures little by little.