Position the open Chain Doc over the chain

The chuck easily flips between Presta and Schrader valves and threads on for superior engagement

It doesn't matter what type of terrain you are riding

6 and 8mm hex wrenches

Air release button

Lezyne Trigger Speed Drive CO2 Inflator - Black algolia-ignore Position the open Chain DocCO2 inflators are the lightest and most efficient way to inflate tyres. If you race or dislike carrying lots of stuff on your ride, the Lezyne Trigger Speed inflator is an excellent choice. CNC machined from aluminium, this inflator is light and built to last. Compatible with Presta valves and threaded cartridges, the inflator works by simply pressing onto your Presta valves. Includes one 16g cartridge which is good for most 26" and 27. 5" tyres (one