Unior | Cassette Wrench

Designed as an alternative to the traditional Chain Whip, the Cassette Wrench firmly holds the cassette in place with 3 steel pins. Instead of fumbling about with a small bit of chain the tool instead simply slides over and lands itself in place, helping you to work quicker and safer.
 
The pins are notched to keep the tool from slipping off under the sort of torque you can deliver with a 350mm long tool.