GT2 (3mm Pitch) Timing Pulley - 20 Tooth - 9mm Belt - 8mm Clamp Bore
This timing pulley has an 8mm bore which makes it ideal for use with 8mm lead screws, allowing you to drive the Lead screw by belt instead of with a coupler. It can also be used to synchronize 2 or more Lead Screws with belt as well.
This pulley is also used in the OpenBuilds Nema 23.Reduction/Stand-Off Plate Set