The high power bh90 hose delivers power efficiently to the oversized 22mm glass fibre phenolic pistons optimized for heat insulation lightweight and stiffness this set is recommended for use with ice tech freeza centre lock rotors for optimum braking performance in a choice of 160 180 and 203 mm this kit also contains aluminium backed resin pads plus spare olives and insert should you wish to adjust the length of the cuttable hoses