MilKit Tubeless Conversion KitMeasure and refill sealant without having to deflate tires completely A rubber flap prevents sealant from filling and blocking the valves Valves are compatible with most tubeless compatible rims Kit consists of (2) valves, a measuring refilling syringe with removable tube, a bottle of sealant (250ml 8oz), a valve core tool, an additional needle, and a roll of rim tape (10m 11yd) Model 45 21 Conversion Kit, 45 25 Conversion Kit, 45 29 Conversion Kit,