28 inch AMIGO inner tube (ETRTO size 37-622) equipped with French valve with a valve length of 45 millimeters. Falls under the inch sizes 28 x 1.40 and 28 x 1 5/8 x 1 3/8. Best value for money This strong inner tube from AMIGO is developed and produced with care, so you enjoy the best quality at a very competitive price. General specifications: Color: black Material: rubber Type of valve: French valve Valve length: ±40/45 mm ETRTO size: 37-622 Inch size: 28 x 1.40 28 x 1 5/8 x 1 3/8