• Presta vlave
• Made of durable aluminum alloy.
• It's used for valves that are not long enough to reach a pump head.
• Simply unscrew the air outlet on the Presta valve, and screw the valve extender onto the valve.

Full control of your valve, however deep your rim profile

• Can be used on any presta tube with a screw out valve (replaceable valve core)
• Available in 20, 30, 40 & 60mm depths
• Two extensions per blister pack plus application tool
• Can be doubled up to create a longer extension 
• With this system, your original valve core is always at the top of the extension, unlike some systems which screw over the valve and leave the valve core unreachable inside the rim and require users to leave the valve open at all times.