These are easy to use

Made in the USA from silicone

These are for use with 104 BCD chainrings or 64 BCD chainrings on 104 BCD cranksets

The outer width of both ends of the CNW-2 are nominally 12mm wide

2 x Tubeless Auto/Schrader valves

Maxxis Welterweight Tube - Schrader Valve - 1.9-2.35 Inch - 29 Inch Do Not Ship Internationally These are easy to useRide with confidence! Maxxis Welter Weight tubes are engineered for aggressive riders who require durability in their inner tubes. Be sure to keep a few spares on hand! Who's this item for: Aggressive riders who want a tube with good puncture resistance without the extra weight of a DH tube. Removable valve core: Yes, the valve cores are removable. Tube wall thickness: 0. 80mm Weight: 26 x 2. 2 2. 5: 212g 27. 5 x 2. 2 2. 5: 223g 29 x 1. 9 2. 35: 178g