KMC Z510H Drop Buster White & Black 1/2" x 1/8" Track/BMX/Single Speed Chain. For BMX,Fixies, Cruisers, Track, All Types of single speeds, Stretch proof, mushroom pin, DropBuster Technology. Drop Buster - This is a perfect chain for racing track and Heavy Duty BMX use, the tensile strength is a outstanding @ 1,200Kg. It can be used on almost every 1/2 x 1/8 inch drivetrain. Light but strong, this chain is a bestseller in the BMX Freestyle world, but it is also becoming very popular in the mid-high end range internal gear hub equipped bikes, because of it"s long life and high reliability. Taller profile will not derail, dropbusted! White & Black Colors adds style to fixies, cruisers and kids bikes as well.