Description: Fully adjustable, F type, made from steel. Knurled twist grip, skidproof, easy to operate. Plastic guard ends to protect surface being clamped. This clamp extends to 150mm/ 200mm/ 250mm/ 300mm/ 400mm/ 500mm (as you choose) and has a clearance of 50mm or 80mm. (For example, " 80mm x 500mm " means it can extend to 500mm, and has a clearance of 80mm). There is a clearance of 50mm (or 80mm, as you choose) from the bottom of the vertical bar to the centre of the plastic clamp ends. Specification: It is used as an extra hand when woodworking or metal working where gluing, welding or bolting is required. Consisting of 2 horizontal bars joined together by a vertical bar. There is a large screw on the lower bar with a plastic cap connected to a ball end allowing the end to sit at different angles whilst not marking the object which is being clamped. Can also be used as a simple mechanical device used for lifting engine or transmission parts. The clamp has an adjusting screw to tighten onto the part and a lifting bar to attach to a hoist cable. Removable soft plastic jaw guards, to protect surface that you are working on. Material: Steel Color: Silver, Blue Maximum working size: 50mm x 150mm ( 1.97x5.91 inch ) 50mm x 200mm ( 1.97x7.87 inch ) 50mm x 250mm ( 1.97x9.84 inch ) 50mm x 300mm ( 1.97x11.81 inch ) 80mm x 200mm ( 3.15x7.87 inch ) 80mm x 250mm ( 3.15x9.84 inch ) 80mm x 300mm ( 3.15x11.81 inch ) 80mm x 400mm ( 3.15x15.75 inch ) 80mm x 500mm ( 3.15x19.69 inch ) (as you choose) Package Includes: 1 Piece of F Type Clamps