Features Reliable Performance: Ensures stable transmission with the timing belt, boosting efficiency in your projects Versatile Applications: Perfectly suited for 3D printers, CNC lathes, milling machines, and more for broad utility Enhanced Design: Comes with 2 rubber timing belts (852mm length, 6mm width) and 2 synchronous wheels (20T & 60T) for optimal functionality Durable Construction: Crafted from premium alloy steel, designed to resist deformation and provide long-lasting performance Quick Installation: Lightweight and compact, easily installable using a hex wrench and M4 screw hole for convenience Features: 1、Reliable Work: Works ly with timing belt, the synchronous wheel enables stable transmission and high working efficiency. 2、Broad Utility: Widely applied in 3D printers, CNC, milling machines, gear forming machines, drilling machines, CNC lathes, etc. 3、Better Design: With 2pcs rubber timing belt with 852mm length and 6mm width, there are 2 sets synchronous wheel with 20T and 60T. 4、Good Material: Mainly made from premium alloy steel material, not likely to deform and also has great durability for long uses. 5、Easy to Install: Small in size and light in weight, the installation can be quickly finished with hex wrench and M4 screw hole. Specification: Item Type: Synchronous Wheel Material: Aluminium alloy, rubber. Timing Belt Length: Approx. 852mm / 33.54in Timing Belt Width: Approx. 6mm / 0.24in Teeth: 20T, 60T. Screw: M4 Package List: 4 x Synchronous Wheel 2 x Belt 1 x Hex Wrench Package List 4 x Synchronous Wheel 2 x Belt 1 x Hex Wrench