Topeak Presta Valve Extender Black

For deep section rims; Machined aircraft aluminum alloy with black anodized Rubber seal to prevent high air pressure leakage; Size (L x W x H): 4.3 x 0.7 x 0.7 cm, 1.7" x 0.28" x 0.28"; Weight: 3.4 g / 0.12 oz; Material: Body: Aluminum Alloy, Base: Machined Aircraft