WINSINN GT2 Idler Pulley - 20 Toothless, 5mm Bore, for 10mm Width Timing Belt, Aluminum - Ideal for 3D Printers, CNC Machines (5-Pack)

【Durable Aluminum Build】Made from high-quality aluminum with surface oxidation treatment for effective rust and corrosion resistance, ensuring reliable use in various settings.. 【Toothless, 20 Design】Features a toothless design with 20 outer grooves, ideal for guiding or tensioning timing belts smoothly in precision applications like 3D printers.. 【5mm Bore Precision】Engineered with a 3mm bore to securely fit standard shafts, providing stability and reducing slippage during operation in compact equipment setups.. 【For 10mm Width Belts】Compatible with 10mm width GT2 timing belts, ensuring proper alignment and performance in small-scale mechanical systems like 3D printers.. 【Versatile Application】Perfect for 3D printers and similar devices needing consistent belt tension, offering dependable performance without complex maintenance needs.