Rotary 304 Tube 20x2125 (20x2.125) Straight Stem Thorn Proof by Rotary $11.05 Sold out 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out PRODUCT INFORMATION Type Tube PRODUCT DESCRIPTION DESCRIPTION Tube 20X2125 Straight Valve Stem, (Thorn Proof). SPECS TIRE SIZE 20X2125 VALVE STEM STRAIGHT SIZE 20X2.125