17mm 420 428 FRONT SPROCKET RETAINER CLIP 50cc, 110cc, 125cc, ATVs, QUADS, DIRT / PIT BIKES INSIDER DIAMETER 17mm COULD FIT 420, 482 CHAIN SPROCKET FROM 12 TEETH-17 TEETH FITS SOME MODELS OF TAO MOTORS, TAOTAO, ICE BEAR, WOLF, JMSTAR, ROKETA, SUNL, TANK, PEACE, JONWAY, COUGAR, GATOR AND MANY OTHERS *ANY QUESTIONS PLEASE FEEL FREE TO GIVE US A CALL*