PERFECT CORNER COLLAR 90 aluminum alloy corner clamp allows two blocks of wood of different thickness to be joined together at a 90 angle. Ideal for welding, furniture installation, assembly , the manufacture of cabinets, etc. MULTI-APPLICATION Slots in the base plate, you can fix the vise to a work bench or machine table. Great for woodworking, engineering and welding or other related DIY projects. MATERIAL The clamp body part is aluminum alloy die-casting construction, more durable and stronger but lighter to hold in the hand. Handle using TPR rubber coating design, anti-slip, high strength; The leveling steel swivel nut and electroplating screw, more durable, not easy to rust. TIGHTENING RANGE Bidirectional one-handle jaw rotation can be adjusted. The maximum clamping range is Approx. 70 mm / 2.8 inch; Jaw width: 3.7inch / 9.5cm; Jaw depth: 1.4inch / 3.5cm. Thank you for your confidence If you have any problems with the product, please contact us and we will do our best to resolve all your issues.