Features High-Strength Metal Construction: Engineered to withstand strong impacts, ensuring durability in demanding applications and enhancing the performance of your industrial robot parts Secure 6mm D-Shaped Center Hole: The unique design effectively prevents shaft slippage, providing reliable operation and improved efficiency in gear performance Long-Lasting Durability: Crafted from high-quality metal, these gears offer a prolonged service life, reducing the need for frequent replacements and maintenance Precision Engineering for Quality: Manufactured with great attention to detail, these gears serve as excellent accessories for your robotic projects, ensuring smooth and reliable function Convenient Pack of 2: Each set includes 2 D-hole gears, making it easy to replace worn parts and maintain optimal performance in your industrial applications Features: 1、High-strength metal gear can withstand strong impact 2、The center hole is a 6mm D-shaped hole, which effectively prevents the shaft from slipping 3、Made of metal material, durable and long service life 4、High quality and great processing, good accessories for robot 5、Including 2pcs D-hole gear, convenient to replace Specification: Item Type: D-Hole Gear Quantity: 2Pcs Number of Teeth: 40 teeth Outer Diameter: Approx. 34mm / 1.3in Thickness: Approx. 16mm / 0.6in Material: Metal Thread: US 6-32 Package List: 2 x Gear Package List 2 x Gear