MX ChainFlat back, high performance, extra strong BMX chains.Slotted outer link with grind friendly 'flat back' and curved inner edge for micro-drive compatibility.1/8" x 102L in colours:Chrome, chrome outer/grey inner, gold or 'magic' coated red, blue, purple, green or black.395g3/32" x102L in colours: Chrome, chrome outer/grey inner, gold or 'magic' coated red, blue or black.365g