Seal bmx cranksthe seal bmx cranks are a 3 piece style crank made from tubular chromoly steel ideal as a repair or replacement item for the novice or first time rider sold as right hand drive only with a fixed chainring peg for simple installation the seal bmx cranks are compatible with any 19mm size of bottom bracket and 916th pedals and come supplied with a flush mount bolt kit featuresarm length 175mm axle 19mm 8 spline weight 1226gbuyseal bmx componentsfrom chain reaction cycles t