Chain Breaker #420 428 520 525 530 Motorcycle Bike Bicycle ATV By Forgemech Use to repair motorcycle or bicycle chains. Suitable for chain sizes #420, #428, #520, #525, and #530 Knurled Grip - Hex driven punch -Weight 1.35 lbs Overall dimensions: 5-1/8" L x 4" W x 15/16" H FORGEMECH Brand - Professional Quality