Chase RSP 1.0 BMX Frames. Designed to balance strength, stiffness and lightness and featuring muscle formed stays.AL-7005-T4/T5 heat-treated aluminumIntegrated 45/45deg headtube, Euro bottom bracket, 7mm thick CNC-machined 3/8" dropoutsLinear-pull brake mountsItem SpecificationsColorWhite/BlackBB/Frame InterfaceEnglishSeatpost Diameter27.2mmSeat Collar Diameter31.8mmRear Axle Type3/8" bolt onTT (Effective)54.61cmDefined ColorWhiteS.H.I.S UpperIS42S.H.I.S LowerIS47,IS42