#25 Chain Roller Sprocket 12mm Bore 1/4" Pitch 12 Tooth Type B Sprocket 2Pcs 19mmx30mm 5mm smaller than the outer

5mm smaller than the outer diameter of the hose

Inner Size: 152 x 47 x 40mm / 6inch x 1

28-inch x 0

Inner Size: 295 x 275 x 105mm / 11

#25 Chain Roller Sprocket 12mm Bore 1/4" Pitch 12 Tooth Type B Sprocket 2Pcs 19mmx30mm 5mm smaller than the outerFeatures: 1. Chain Sprockets are normally mounted in a fixed position on a fixed shaft. Round hole with 2pcs Set Screws at 90 degrees. 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 least three teeth in