BMX OR BEACH CRUISER 1/844 TEETH CHAINRING WITH GUARD OPC OR 3 PIECE CRANKS44 TEETH 1/8 DRIVE CHROME STEEL CHAINRING FITTED WITH BLACK CHAINRING GUARDTHIS FITS ANY STANDARD ONE PIECE CRANKS OR 3 PIECE THAT ARE USUALLY USED ON BMX OR AMERICAN STYLE BEACH CRUISER BIKES44 TEETHTHIS IS FOR AN 1/8″ CHAIN SO ITS BASICALLY FOR A SINGLE SPEED OR INTERNAL THREE SPEED BIKE.THESE WERE FITTED TO SOME EARLY BMX , MODERN BMX , CHILDRENS BIKES & BEACH CRUISER BIKES ETCCENTRE INTERNAL HOLE STANDARD ONE PIECE CRANK (OPC) SIZEBLACK PLASTIC GUARD IS PUSH FIT TO CHAINRING SO CAN BE REMOVEDWEIGHT 420grams ( approx)