Kenda 24X2.50 Tomac Nevegal Wire, K1010 60Tpi 30-50 Psi John Tomac Signature Series Tall knobs designed to penetrate and hold on to loose terrain Dual Tread Compound (DTC) features L3R Pro center tread for durability and Stick-E rubber outer knobs for great cornering traction Slow rebound Stick-E rubber allows the tread to conform to the terrain instead of bouncing off Cap ply layer on downhill tires prevents punctures 60 tpi 30-50 psi 1150 grams