Converts non-tubeless wheelset to tubeless allowing the use of either standard or tubeless tires. Patented Sealing Strip can be removed as easily as a tube and used repeatedly. Removable valve core allows adding sealant without removing the tire (2oz injector bottle sold separately #SX-8054). Includes 1 tubeless sealing strip with valve stem and core (Stans Sealant sold separately #SX-805. ). Optional: use 1-3 layers of 22mm Velox rim tape centered in the rim, with Stans Sealing Strip on top. When the tire inflates it will snap down in the channel on either side of the tape to improve tire seal. 56 grams per wheel.