Specification Brand : uxcell BulletPoint1 : Package Content: You will receive 2pcs 80 teeth synchronous wheel that fit with 6mm width belt, 4pcs M4 screws. Timing Belt Pulley Dimension: 20x55x11mm (Inner Dia*Outer Dia*Thickness). BulletPoint2 : Material: The synchronous wheel is made of aluminum alloy, ensuring durability, precision engineering, and high transmission accuracy. BulletPoint3 : Transmission And Operation: Ensures seamless operation without slipping, maintaining a consistent gear ratio for reliable performance. Featuring precise tooth pitch for smooth transmission, resulting in high transmission efficiency and energy-saving benefits. 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 ItemName : uxcell 2pcs GT-2 Pulley Synchronous Wheel 80 Teeth 20mm Bore, Fit with 6mm Width Belt, Aluminum Alloy Timing Pulley Wheel for 3D Printer, CNC Machine ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemTypeKeyword : timing-pulleys Manufacturer : uxcell NumberOfTeeth : 80 PartNumber : f24061400ux0049 ProductDescription : Description: Material: The synchronous wheel is made of aluminum alloy, ensuring durability, precision engineering, and high transmission accuracy. Transmission And Operation: Ensures seamless operation without slipping, maintaining a consistent gear ratio for reliable performance. Featuring precise tooth pitch for smooth transmission, resulting in high transmission efficiency and energy-saving benefits. 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.