Topeak Valve Extender - 40mm Box Pack in some cases a flat-base

in some cases a flat-base tubeless valve works better than a conic base one

Carbon composite base with optimized rail joint structure ensures all-day support

It's a cousin to the award-winning Pike

It drives out moisture and leaves a protective layer on your set-up to prevent the damaging effects of sweat and condensation

Recommended tire size: 32-622 to 50-622

Topeak Valve Extender - 40mm Box Pack in some cases a flat-baseMachined from durable aircraft grade aluminum alloy to conveniently extend length of two piece type Presta valves by 40mm to aid inflation. Durable aluminum alloy valve tool is designed to easily tighten or remove two piece type Presta valve cores and valve extenders. Note: To improve air seal, wrap threads of valve extender and valve core with Teflon thread tape and ensure threads are tight. Specifications Size: 5 x 0. 6 x 0. 6 cm 1. 96 x 0. 23 x 0.