Package List:2 x Ruler 4 x Clamp Maintenance of wooden kitchen utensils Alloy Material: The right angle clamps squares made with Aluminum Alloy(6061-T6). CNC Machined from solid aluminum, don't break.Anodized red surface,corrosion... With exquisite craftsmanship, lightweight and practical right angle ruler ensures quality, it can be used with confidence. Built to strict quality control standards, suitable for boxes, shelves, and outside corners. 2PCS 180mm X 180mm 90 Degree Right Angle Clamps Positioning Squares Mm Or Inch Scale Aluminum Alloy Woodworking Carpenter Corner Clamping For Picture Frame Cabinet Drawer P 2006249 Features: With metric and inch scales. Aluminum alloy material and anodized treatment, high hardness, rustproof, non-corrosive, permanent use The 90 ° right angle clamp holds the connection at a 90 ° angle, regardless of whether it is stuck or with fasteners, which damage the brittle edge. Specification: Item Type: Right-angle ruler , Material: Aluminum alloy , Size: Approx., 110 x 110mm / 4., 3 x 4., 3in , Approx., 140mm / 5., 5in 【Without Damage】The 90° right angle corner clamp keeps the joint at a 90° angle, whether you simply glue or use fasteners, it will not damage the fragile cutting edge. Right Angle Woodworking Tool Woodworking Angle Clamps 45 90 Degree Aluminum Squares Preciva 2-Piece 45/90 Degree Angle Clamps - Aluminum Alloy Woodworking Squares For Frame & Cabinet Assembly Clamps For Woodworking Corner Clamp 【Easy to Use】You just need place a square in the corner of the two stock pcs you need to square and secure with a set of clamps.