DESCRIPTION:For 60 mm below deep section rims Precision machined aircraft aluminum Presta Valve Extender with leak-free o-ring seal.BODYMachined aircraft aluminum alloySIZE4.3 x 0.7 x 0.7 cm / 1.7” x 0.28” x 0.28”WEIGHT3.4 g / 0.12 oz