Aluminum GT2 Timing Pulley 20-Tooth (2-Piece Pack)

A GT2 timing pulley's teeth mesh precisely with a matching GT2 belt's teeth, transmitting motion without the slip a plain friction-driven pulley and belt would suffer under load - exactly the positional accuracy CNC machines and 3D printers depend on for their X/Y axis motion. Machined from aluminum rather than plastic, this pulley holds its tooth profile accurately over years of use rather than gradually wearing under repeated belt tension.

Sized for 6mm-wide GT2 belt with 20 teeth, it's one of the most common pulley sizes in the DIY CNC and 3D printer community, meaning it matches a huge base of existing build documentation and motor-shaft coupling hardware already standardized around this size. Selling as a 2-piece pack covers the common need for matched pulleys on both ends of an axis (or spares for a second axis) in one purchase.

Common uses are 3D printer X/Y axis belt-drive motion systems, DIY CNC router and laser cutter gantry motion, and any precision belt-driven linear motion mechanism needing accurate, slip-free positioning.