2.50-17 28 mm straight valve stem Works for 17″ tires Can substitute for 2.25/2.50-17 & 2.50/2.75-17 tubes 2.50-17 inner tube for Honda style mopeds & scooters and many sizes of 17″ dirt bike tires Comes with a straight valve stem Description 2.50-17 inner tube for Honda style mopeds & scooters and many sizes of 17″ dirt bike tires. Comes with a straight valve stem. This size inner tube is compatible with several sizes of inner tubes, including both 2.25/2.50-17 and 2.50/2.75-17. Compatible with tire sizes of 2.25-17 through 2.75-17. WARNING California Residents : Proposition 65 Warning Specifications Size: 2.50/2.75-17 Valve Stem Angle: Straight Valve Stem Length: 28 mm