Specification Brand : uxcell BulletPoint1 : Specifications: Number of Teeth: 19; Bearing Model: 6900ZZ; Outside Diameter: 41mm / 1.61-inch; Bump Width: 5mm / 0.2-inch; Total Width: 13mm / 0.51-inch; Bore Diameter: 10mm / 0.39-inch; Pitch: 1/4-inch / 6.35mm; Tooth Width: 2.8mm / 0.11-inch; 1 x Idler Sprocket BulletPoint2 : Idler sprocket is a flat sprocket, with a sealed bearing that allows the sprocket to rotate freely. Idler sprockets are normally mounted in a fixed position on a fixed shaft. BulletPoint3 : The product is made of c45 carbon steel, the tooth part high temperature quenching heat treatment, high hardness, wear resistance, long service life, easy to use. BulletPoint4 : The Idler sprocket should not rotate at a greater speed than is allowable for drive sprockets of the same size. Every roller chain idler sprocket comes with strong teeth that can latch onto the chain. It is suggested that idler sprockets have at least three teeth in mesh with the chain. BulletPoint5 : Widely used in milling machine, drilling machine or other machinery transmission occasions. ItemName : uxcell #25 Chain Idler Sprocket, 10mm Bore 1/4" Pitch 19 Tooth Tensioner, Black Oxide Finish C45 Carbon Steel with Insert Single Bearing for ISO 04C Chains ItemPackageDimensions_Height : 14 centimeters ItemPackageDimensions_Length : 1.6 centimeters ItemPackageDimensions_Width : 10.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : roller-chain-sprockets Manufacturer : uxcell Material : carbon steel c45 ModelNumber : a21120100ux0209 PartNumber : a21120100ux0209 ProductDescription : Features: 1. Idler sprocket is a flat sprocket, with a sealed bearing that allows the sprocket to rotate freely. Idler sprockets are normally mounted in a fixed position on a fixed shaft. 2. The Idler sprocket should not rotate at a greater speed than is allowable for drive sprockets of the same size. Every roller chain idler sprocket comes with strong teeth that can latch onto the chain. It is suggested that idler sprockets have at least three teeth in mesh with the chain. 3. The product is made of c45 carbon steel, the tooth part high temperature quenching heat treatment, high hardness, wear resistance, long service life, easy to use. 4. Widely used in milling machine, drilling machine or other machinery transmission occasions.