08B Chain Roller Sprocket 10mm Bore 1/2" Pitch 13 Tooth Type B Sprocket 2Pcs 12x28x8mm the lock tongue will pull

the lock tongue will pull back and the door will be unlocked

Thickness: 2

and count accurately

Total Length: 140mm / 5

08B Chain Roller Sprocket 10mm Bore 1/2" Pitch 13 Tooth Type B Sprocket 2Pcs 12x28x8mm the lock tongue will pullFeatures: 1. Chain Sprockets are normally mounted in a fixed position on a fixed shaft. This sprocket has a hub extension on one side to provide stability. The shaft can be fixed well, which is convenient to use. 2. The chain sprocket should not rotate at a greater speed than is allowable for drive sprockets of the same size. Every roller chain sprocket comes with strong teeth that can latch onto the chain. It is suggested that chain sprockets have at