Function: 1. D-Shaft is made of high-quality material, ensuring durability, wear resistance, and high strength. 2. The stainless steel D-shaft functions similarly to a round shaft, but its D-shaped profile includes a flat surface for set screws. 3. The D-shaped profile effectively prevents wheels, gears, and other drive components with matching D-holes from rotating and slipping on the stainless steel D-shaft. 4. These precision-ground stainless steel D-shafts can connect wheels, gears, and drive components to power motors. 5. Used as a drive shaft accessory for intelligent robots, it can also be applied to lathe equipment and engineering machinery. Specification: Item Type: D-Shaft Material: Stainless Steel Model: 4101-0006-0030 Length: Approx. 30 mm/1.18 inches Compatible: Used as a drive shaft accessory for intelligent robots, and also suitable for lathe equipment and engineering machinery. Package List: 20 x D-Shaft Note: 1. Match the appropriate design size before use and installation. 2. Remember to tighten the screws during the fixing process.