The 2mm Pitch GT2 Pinion Timing Pulley (8mm REX™ Bore, 20 Tooth) is designed for high-precision applications such as printers, sliders, and XY tables. It features a dual-material construction with steel in critical areas like the flange and set-screw hole, while the rest is aluminum for reduced weight. This pulley is compatible with 8mm REX™ shafting, commonly used in the goBILDA® system, ensuring a positive drive in precision belt operations. Built-in shims allow it to run smoothly against bearings without contacting the outer race.