Made of quality aluminum, excellently machined, finished smoothly
20T 8mm GT2 timing belt pulley,applies to 6mm width belt; Allen key is included
The surface of the synchronous wheel is anodized to make it more wear-resistant and better in performance.
Two screws are provided for each timing pulley and already screwed into the pulley. The matching Allen Wrench made them easier to screw in and out.
Perfect choice for building 3D printer or similar projects