TB-FW40 PAT.

Cassette pliers

Super B’s patented design allows you to secure the cassette easily and quickly with one hand
The adjustable opening fits sprockets from 10 to 17 teeth and is compatible with 5- to 11-speed systems
A built-in spring locks the sprocket firmly in place, preventing slippage
Prevents sprocket deformation and protects your hands from injury during use