Item Type: Super Clamp Material: Aluminum Alloy The Range Of The Strong Clip Can Be Clipped: Approx.14-43mm / 0.6 x 1.7in Package List 1 x Strong Clamp (1/4 And 3/8 Inch Screws Are Installed) 1 x Wrench 1Material: The multifunctional force clamp is made of aluminum alloy, CNC machined tightly, and the surface is anodized, which is strong and durable. 2Larger Opening and Closing: Supports a maximum clamping of 43mm and a minimum of about 14mm. The one word wrench is locked, which saves time and effort, and is convenient and quick. 3Anti Slip: There are embedded particle silicone pads on the upper and lower jaws to increase the clamping force and make it stable and non slip. 4Applicability: It can be applied to a variety of scenes such as railings, pipes, table shelves, branches, doors and window and other shapes, and can be easily clamped. 5Screw Holes: There are 6 1/4inch screw holes, 2 3/8inch screw holes and Alai positioning holes, each with a 1/4inch and 3/8inch screw holes to meet expansion needs.