Description: Drillpro Woodworking Aluminum Alloy 100-140mm Adjustable Precision Clamping Square Set with Scale Machinist Square Positioning Right Angle Clamping Measure Keep large panel projects perfectly aligned while you install fasteners, add additional features, or simply visualize your design Longer, wider and stronger than our original design Drop easily into any of the holes and secure the square faster and easier than separate “F” or “C” style clamps Package Included: 1 x Square with Scale 2 x M8 Screw Nut 2 x Adjust Rack 2 x100mm Right Angle Screw Rod Specification: Material :Aluminum Alloy Size: 3.94"/4.74"/5.51" Laser Scale Angle: 90° right angle Application: Wood jigs fixing fixture Surface treatment: Anodized Use: Right angle positioning Features: More convenient than separate clamps, locking directly into the holes on the squares The large, easy-to-grip knobs tighten more securely than the round handles found on most clamps Put your panel projects together faster, easier, and more accurately with Clamping Squares these assembly tools are CNC machined out of one solid chunk of aluminum to a tolerance of ± .0255 degrees