Sigma 4375621
 | Outdated Product Total number of items: 16; Square drive size ("): 1/4; Socket heads (6 points): 3; Socket heads sizes (6 points) (mm): 8, 9, 10; Screwdriver handle: 1; Open end wrenches: 3; Wrench sizes (mm): 8, 10, 15; Hex wrenches: 6; Hex wrenches size (mm): 2, 2.5, 3, 4, 5, 6; Screwdriver: 2; Slotted: SL5 |
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The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Sigma 2026 - new arrivals, bestsellers, and the most relevant models Sigma.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Sigma 2026 - new arrivals, bestsellers, and the most relevant models Sigma.
A compact tool with all the essentials that can assist in field repairs. Over time, the construction becomes loose, and tightening of the screws is needed.  Reverse_rain: use Sigma 4375621 more than year |
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The tool itself is quite simple; it consists of two steel plates connected by two axles. Tools are threaded onto these axles like kebabs on a skewer. The metal plates on the sides are covered with decorative plastic overlays.
Inside, we have a set of hex keys, a flathead screwdriver, and a Phillips screwdriver, a square for the bits, presumably 1/4, and three bits sized 8, 9, 10. There’s also a metal plate with a universal bicycle wrench (I remember seeing these when we used to ride on KhVZ bikes).
The construction is decent, and it has saved me a few times on the road. There's a small issue with the axles; they can sometimes loosen, causing the tools to "wobble" and have play relative to the handle, making them open very easily all at once, which reduces the comfort of use. It's one thing to turn a screw with the tool and quite another when, in addition to turning, you’re trying to keep the tool together. To tighten the axle screws, you need a hex key.