Premium Material: The bench dogs are made of quality aluminum alloy with oxidation treatment, which is durable, lightweight and not easy to fade or deform. The bench dogs are smooth and comfortable in touch, which can perfectly match with any worktable, providing you with a long term comfortable using experience. Multiple Choice: There are 2 sizes for you choose,19mm or 20mm, which can satisfy different needs of diverse size craft projects. Please measure your hole diameter carefully before purchase. You can measure the size of your woodwork projects and select the right tool of your preference. Easy To Use: The diameter is 0.75 inch, which can be versatile tools of milling, cutting and grinding. The material has been newly upgraded, which is lighter and easier to carry and use. And the bench dogs are perfect fit for 19mm/20mm holes on an MFT worktop. Ideal Accessory: This bench dog is an essential woodworking hand tool, delivering dependable and secure assistance for your work pieces. Practical Tool: The bench dogs are hold-down device that can be part of any workbench. The bench dogs are ideal tool for milling, cutting and grinding. Except workbenches, they can also be used for woodworking baffles.