Machined from durable aircraft grade aluminium alloy, the Topeak Valve Extender adds convenience by extending the length of Presta valves by 70mm for easier inflation. This high-quality valve tool is made from durable aluminium alloy and is designed to effortlessly tighten or remove Presta valve cores and valve extenders. The pack includes 2 pieces of aluminium alloy valve extenders and 1 piece of the aluminium alloy valve tool. The size of the valve extender is 8 x 0.6 x 0.6 cm (3.15 inches x 0.23 inches x 0.23 inches) and it weighs 3.2 grams (0.11 ounces). Please note that this product does not include any frame sizes or frame numbers and is categorised under Valve Extenders.