Aluminum Material: Our bench are made of aluminum alloy with anodized surface, make the product last for a long time.Compared to plastic or nylon , aluminum alloy bench have more advantages in use. Multipurpose: Workbench stops for 3/4 inch dog hole are used to prevent wood from sliding and moving, when wiring, cutting, grinding, polishing, and carving on the table. No matter what carpentry operation you need to perform, it can help you finish the work. Easy To Use:The bench has been newly upgraded, which is lighter and easier to carry and use, just put the product in the hole you want to place. And the bench are for 19mm(3/4inch) holes on an worktop. Pack of 8: 8 pack aluminum alloy bench for woodworking can secure wood boards to the utmost extent.It comes square contact surface,provide non-marring and secure hold on your wood, it will satisfy all your needs as much as possible. Practical Tool : The bench are hold-down device that not only can be part of any workbench, but also can be used for woodworking baffles.perfect for milling and wood carving, cutting, polishing, grinding and etc. Colour:red Material:aluminum alloy Package Contents: 8 x bench dog clamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.