Designed for maximum ergonomics and precision fit, these sit comfortably in your hand and have a non-marring slip fit over spoke nipples.

The SI handle design is a large-format high-leverage block that is easily grasped from multiple angles. Its design focuses on low overall height, for applications where a clamp-style spoke holder is desired. Made from laser-fused Nylon.

This Red F3.9mm size is specifically designed to fit nipples from Fulcrum. Also useful for some e-bike nipples.

The interior walls of this tool are a parallel square, unlike other Monolith bits, which feature tapered walls.

100% Made in the USA