For standard rims from 21.5mm to 25mm. Stan's No Tubes tubeless system converts your existing wheelset to tubeless. Allows you to use either standard or tubeless tyres. The original tubeless system, developed over 5 years to make tubeless easy. Each kit converts 2 wheels. See compatibility chart for which tubeless kits to use.Note: if you want to convert 2 different wheels which need 2 different rimstrips then you can order rimstrips and sealant separately; it won't work out much more expensive than a kit.All kits contain the following items:- Pint of The Solution sealant with scoop- 2 rim strips- 1 roll of spoke tape- Full instructions