Specification Brand : uxcell BulletPoint1 : Package Included: You will receive 1pcs chain roller sprocket with set screws. Bore Size: 1/2 inch, Tooth Outer Diameter: 65mm/2.56 inch, Step Outer Diameter: 50mm/1.97 inch, Thickness: 20mm/0.79 inch. Number of Teeth: 20. Finish: Black Oxide. BulletPoint2 : Chain Sprockets are normally mounted in a fixed position on a fixed shaft. Keyway with 2pcs Set Screws at 90 degrees. The shaft can be fixed well, which is convenient to use. BulletPoint3 : 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 mesh with the chain. BulletPoint4 : The product is made of carbon steel, the tooth part high temperature quenching heat treatment, high hardness, wear resistance, long service life, easy to use. Fully black oxide coated, rust resistance. BulletPoint5 : Widely used in milling machine, drilling machine or other machinery transmission occasions. Color : black FitType : Universal ItemName : uxcell #35 Chain Roller Sprocket B Type, 1/2" Bore 20 Tooth Single Strand Chain Sprocket, Carbon Steel, Keyway with Set Screws ItemPackageDimensions_Height : 1.77 inches ItemPackageDimensions_Length : 4.53 inches ItemPackageDimensions_Width : 3.74 inches ItemPackageQuantity : 1 ItemTypeKeyword : roller-chain-sprockets Manufacturer : uxcell NumberOfItems : 1 PartNumber : f24060300ux3563 ProductDescription : Chain Sprockets are normally mounted in a fixed position on a fixed shaft. Keyway with 2pcs Set Screws at 90 degrees. The shaft can be fixed well, which is convenient to use. 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 mesh with the chain. The product is made of carbon steel, the tooth part high temperature quenching heat treatment, high hardness, wear resistance, long service life, easy to use. Fully black oxide coated, rust resistance. Widely used in milling machine, drilling machine or other machinery transmission occasions.