GT2 Timing Driving Pulley 20Teeth Bore 8MM Double Side Gear Alumium For GT2 Belt Width 6MM 3D Printer Accessories<br> Specifications:  <br> Model: GT2<br> Bore: 8mm<br> For 6mm width belt<br>  <br> Package included:  <br> 1 x   GT2 Timing Driving Pulley