Description: Material: Made from aluminum alloy, this timing pulley is designed to withstand high temperatures, and resist wear and tear, ensuring long term performanceCompatible Design: Specifically designed for use with 6mm wide GT2 timing belts, this 3D Printer pulleys ensure smooth and efficient power transmission in your 3D printer or other machineryHigh Performance: Uniform tooth surface, minimizing the risk of slipping, which is in good cooperation with the Timing beltEasy Installation: Equipped with M3 set screw, this replacment pulley provides a secure fit on your motor shaft, preventing slippage during operation for reliable performancePack: This set includes 10 GT2 timing belt pulleys to keep your equipment running smoothly without interruption Specification: Material: Aluminum Alloy Size Chart: DxH 1.3cmx1.4cm/0.51inchx0.55inch, Inner Hole 0.5cm/0.20inch Package Includes: 10 GT2 Timing Pulley Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.