Unior 2-in-1 Emergency Cassette Lockring Tool Break Glass in Case of Emergency If you ever need to remove your cassette while you're on the go, then you'll want an emergency tool. The Unior 2-in-1 Emergency Cassette Lockring Tool allows for field cassette installation/removal. It includes a plastic frame guard to protect your paint and this tool can accomplish what would normally require 3 tools. Features Removes your cassette in an emergency Plastic frame guard to protect your paint One tool that does the job of a lockring remover and chain whip | Unior | 2-In-1 Emergency Cassette Lockring Tool Black