Specification Brand : uxcell BulletPoint1 : Package Contents: You will receive 4pcs 12mm bore pulley, 8pcs M4 screws, and a wrench. (Pulley Dimension: OD 28mm x Height 17mm) BulletPoint2 : Material: Synchronous pulley is made of good quality aluminum alloy, Surface oxidation treatment, smooth surface, more beautiful and durable to use BulletPoint3 : Precise Tooth Pitch: 2GT pulley teeth mesh closely with the belt for precise transmission, without slipping at work, having a constant gear ratio BulletPoint4 : User-Friendly Design: With a simple structure that is easy to install, assemble, and disassemble, providing convenience and flexibility during setup and maintenance BulletPoint5 : Versatile Application: Suitable for 3d printers, milling machines, drilling machines, hobbing machines, and more, offering versatility and reliability in various settings Color : Silver Tone CompatibleDevices : 3D Printer ExternallyAssignedProductIdentifier : 7374869023672 ItemName : uxcell 4pcs GT-2 40T Pulley Synchronous Wheel 12mm Bore, Aluminum Timing Pulley 40 Teeth, Fit Width 6mm Timing Belt for 3D Printer CNC Machine (with A Wrench) ItemPackageDimensions_Height : 1.18 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : timing-pulleys Manufacturer : uxcell Material : Aluminum ModelNumber : 016W2HOA9S3I0CZVFM3HO506 NumberOfItems : 1 NumberOfTeeth : 70 PartNumber : f24072000ux0061 ProductDescription : Description: Material: Synchronous pulley is made of good quality aluminum alloy, Surface oxidation treatment, smooth surface, more beautiful and durable to use. Precise Tooth Pitch: 2GT pulley teeth mesh closely with the belt for precise transmission, without slipping at work, having a constant gear ratio. User-Friendly Design: With a simple structure that is easy to install, assemble, and disassemble, providing convenience and flexibility during setup and maintenance. Versatile Application: Suitable for 3d printers, milling machines, drilling machines, hobbing machines, and more, offering versatility and reliability in various settings.