The standard version of Tioga's Powerblock S-spec Tyre the Powerblock ups the strength with steel bead and a thicker, stronger sidewall. Front and rear tyres designed to balance traction and low rolling resistance with its central "Power Block" thread. The UTC rubber compound features a specifically patterned sidewall that adds abrasion protection while maintaining casing suppleness. ###section### Product Specs WHEEL SIZE: 24" MAX PRESSURE: TBC WEIGHT: 24" x 2.1" - 520g (18.3oz) 24" x 1.75" - 450g (15.8oz) PACK SIZE: Single Colour: Black; Size: 24x1.75", 24x2.1"