Specification Brand : HARFINGTON BulletPoint1 : Size - Aperture Diameter: 10mm; Outer Diameter: 20mm; Overall Thickness: 15mm; Groove Width: 7mm; Groove Depth: 4.4mm; Applicable Belts: 6mm PU round belt. BulletPoint2 : Material - The single-groove pulley is made of aluminum alloy, with small precision error, stable operation, high-speed rotation without shaking, effectively suppressing transmission noise and fluctuations, and improving the stability of the belt operation. BulletPoint3 : Usage - First, you need to measure the diameter of the shaft to be installed. For example, if the diameter of the shaft is 8 mm, the inner diameter of the pulley should be 8 mm, so that the installation will be just right. BulletPoint4 : Application - Silver aluminum alloy single slot is suitable for motors, micro spindles, model transmission design, motor shaft transmission, etc. BulletPoint5 : Note - A belt pulley with an outer diameter of 16mm is not suitable for use together with other sizes of belt pulleys. Color : Silver Tone Department : Unisex Adult ExternallyAssignedProductIdentifier1 : 0375854886705 ExternallyAssignedProductIdentifier2 : 375854886705 ItemName : HARFINGTON Single Groove Pulley 10mm Fixed Bore 20mm Outer Diameter Aluminum Alloy with Hex Wrench for Drilling Machine 6mm PU Round Belt ItemPackageDimensions_Height : 37.6 centimeters ItemPackageDimensions_Length : 4.2 centimeters ItemPackageDimensions_Width : 9.1 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : v-belt-pulleys Manufacturer : HARFINGTON Material : Aluminum Alloy ModelNumber : a22011900ux0702 NumberOfItems : 1 NumberOfRows : 1 NumberOfTeeth : 25 PackageLevel : unit PartNumber : hta230820hh000326 ProductDescription : The single-groove pulley is made of aluminum alloy, with small precision error, stable operation, high-speed rotation without shaking, effectively suppressing transmission noise and fluctuations, and improving the stability of the belt operation. Silver aluminum alloy single slot is suitable for motors, micro spindles, model transmission design, motor shaft transmission, etc. First, you need to measure the diameter of the shaft to be installed. For example, if the diameter of the shaft is 8 mm, the inner diameter of the pulley should be 8 mm, so that the installation will be just right. Notice: A belt pulley with an outer diameter of 16mm is not suitable for use together with other sizes of belt pulleys.