Item Type: Synchronous WheelMaterial: Aluminium alloy, rubber. Timing Belt Length: Approx. 852mm / 33.54inTiming Belt Width: Approx. 6mm / 0.24inTeeth: 20T, 60T. Screw: M4 .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Reliable Work: Works perfectly with timing belt, the synchronous wheel enables stable transmission and high working efficiency. 2Broad Utility: Widely applied in 3D printers, CNC, milling machines, gear forming machines, drilling machines, CNC lathes, etc. 3Better Design: With 2pcs rubber timing belt with 852mm length and 6mm width, there are 2 sets synchronous wheel with 20T and 60T. 4Good Material: Mainly made from premium alloy steel material, not likely to deform and also has great durability for long uses. 5Easy to Install: Small in size and light in weight, the installation can be quickly finished with hex wrench and M4 screw hole.