Product Specification:<br> Material: Made of high quality Aluminum Alloy<br> Number of tooth: 20&60T<br> Bore Diameter: 8mm/0.31inch<br> Length of timing belt: 200mm/7.9inch<br> Width of timing belt: 6mm/0.24inch<br> Color: Silver<br> Application:Widely used in milling machine, gear shaper, drilling machine, hobbing machine or other machinery transmission occasions <br> Package Content:<br> 2pcs GT2 60 Teeth 8mm Bore Synchronous Wheel<br> 2pcs GT2 20 Teeth 8mm Bore Synchronous Wheel<br> 2pcs Length 200mm Width 6mm Belt<br> 4pcs M4 screws<br> 1pcs M4 Allen Key<br>