Feature:1. Made of aluminum alloy, which is durable and will not damage the surface of the workpiece to meet your needs2. Having a user‑friendly design, with simple operation, stable and safe, you can use the bench dogs with confidence3. The surface is treated with anodizing technology, which is wear-resistant and has a long service life4. The bench dogs can slide on the board, which is suitable for various table and has a wide range of applicability5. Suitable for woodworking table with 20mm aperture. The main purpose is for woodworking positioning and fixingSpecification:Item Type: 20mm Bench DogsMaterial: Aluminum AlloyTenon Diameter: Approx. 20mm/0.79inBar Length: Approx. 152mm/6.0inSurface Treatment: Anodic OxidationApplicable Scene: Suitable for Use on Woodworking Table with 20mm/0.79in ApertureUses: Used for Woodworking Positioning and Fixing.Package List:4 x 20mm Bench Dogs 2 x Stop Board Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.