DescriptionIf you are looking for some pulleys for your 3D printer, then you must not miss our3D printerpulleys. Made of aluminum alloymaterial, they are high-quality and durable. Easy to install andsuitable for professional and personal use.Features- Color: Silver.- Material: Aluminum alloy.- Size: Approx. 2.75X1.58X1.58cm /1.08X0.62X0.62in . -High-quality material and fine craftsmanship, durable and sturdy for a long time.- These timing pulleys are designed with 5mm inner hole and 20 teeth. - The best choice for building 3D printers or similar projects. - Suitable for home, office, printing shop, school, university,training institution, etc.- Aluminum alloy material withfirm structure and fine craftsmanship.