Description. Are you looking for products with reasonable prices?Are you looking for a sturdy,durable and reliable synchronous pulley set that can complete multiple tasks?If so, our products will be !Our professional synchronous pulley set will meet your needsFeatures.- Color: Silver- Material: Aluminum- Size: 4.00 x 4.00 x 1.80cm/ 1.57 x 1.57 x 0.71 inch- aluminum material,surface oxidation treatment.Easy to assemble and disassemble- Professional and practical design with beautiful appearance,easy to carry and use- Ideal 3D printer replacement accessories,suitable for most models of printers- The aluminum pulley has shiny surface appearance and robust construction.- Synchronous wheel, with screw,can be fixed,include allen wrench, easy to installPackage Including. 2 x 5mm 60 tooth synchronous wheels. 2 x 5mm 20 tooth synchronous wheels. 2 x length 200mm width 6mm belts. 4 x screws 1 x allen wrench