The rap 21 co2 multitool features a simple yet ingenious design that integrates a co2 dispenser the co2 head quickly slides on or off the 5 mm bit allowing for easy access and an internal sleeve unthreads from the chuck revealing the engagement port for a threaded co2 cartridge the head threads onto either a presta or shrader valve and is made up of a lightweight and durable aluminium construction the rap 21 features ergonomic forged aluminium side plates forged wrapped center pivot crv