impac binnenband 8 1 2 x 2 220 210 50 av 40 mmThe Impac inner tube is a black rubber tube with an 8 1 2 x 2 inch size and an ETRTO size of 220 210 50. The valve type is a car valve with a length of 40 mm. This inner tube is suitable for various types of bicycles, such as wheelchairs, walkers, carts, and strollers. Color: black Material: rubber Inch size: 8 1 2 x 2 ETRTO size: 220 210 50 Valve type: car valve Valve length: 40 mm Type of bicycle: wheelchair, walker, cart, stroller