Schwalbe SV6A inner tube Specifications: Color: black Material: rubber Valve: French Valve (FV) Valve length: 40 mm Type of tire: extra light Weight: 65 grams Inch size: 20 x 0.90 20 x 1.00 20 x 1.10 20 x 1.25 20 x 1.35 20 x 1.40 20 x 1.50 ETRTO size: 23-406 25-406 28-406 32-406 35-406 37-406 40-406