2pcs GT2 20 teeth 8mm Belt Pulley Timing Pulley Aluminum Alloy Toothed Pulley Timing Gears for 3D Printer

WIDE APPLICATION: Widely used in 3D printers or similar projects, speed formers, drills, CNC lathes, or other machine transmission applications.

MATERIAL: This GT2 pulley is made of aluminum alloy, sturdy, durable, and can be used for a long time.

SIZE: Outer diameter: approximately 16 mm / 0.629 inch, Inner diameter: approximately 8 mm / approximately 0.314 inch

FEATURE: Bearings are mounted on both sides of the wheels.