The Ground Control tire with our new CONTROL casing delivers plenty of versatility & flat protection. Not only does it feature enhanced cut-resistance but weve also optimized the tread using Finite Element Analysis. It also features our own GRIPTON compound that maximizes mechanical grip damps vibration & offers unparalleled traction in either wet or dry conditions. Casing: 60 TPI Bead: Foldable Butyl wrapped bead = 2 Bliss Ready Compound: GRIPTON 26 x 2.1 psi 25-50 approximate weight 580g