20 inches. Fits tire widths: x 1.75 inches - 2.25 inches What's your valve type? Standard: Also called a Schrader valve, this short, sturdy valve type is used on car tires and is also the most common valve type for bicycles. Typically found on BMX, Cruiser, Kids' and most Mountain bikes. An easy way to remember is S is for Standard (Schrader/short/sturdy) and P is for presta (Performance/premium). Presta: Presta valves are typically found on Performance Road and Mountain bikes (bras that require high air pressure). They have built-in yew locks which you twist to open before inflating. www.thebellgarage.com. For video instruction go to: www.thebellgarage.com Made in China.

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