90 Positioning Square Right Angle Clamp Wood Clamps with Scale M89BOOTDTY1 Set 90 Degree Positioning Square Angle L Type Wood Clamps for Picture Frame, Boxes, Cabinets or DrawersDescriptions: Made of aluminum alloy, it will last for years. Anodized red surface, durable and corrosion-resistant, rust prevention.2 Scales: Metric and ImperialThere are various holes for fixing, making the operation more convenient. Place the square in the corner of the two basic pieces you need to square and secure with a set of clampsSlanted edges, easy to handle and do not damage the delicate cutting edges. Designed to be attached to boxes, picture frames, shelf cabinets, 90 degree welding, and external cornersFeatures:L-shaped angle clamp, strong clamping abilityDouble accurate weights: two measurements: metric and imperialAdjustable clamping blocks: the clamps fit for 7/16" to 1-9/16" thick wood board, and the 90 angle can provide great balance for comfortable use Beveled edges, Easy to use: The beveled edges are easy to work with and do not damage the delicate cutting edges. Professional Woodworking Tools: This angle kit is professionally used to assemble frames, drawers, boxes, and other furniture. It can also be used for woodworking and welding. A practical tool for do-it-yourselfers, engineers, carpenters, etc. Specifications:100 size: 100mm x 100mm (3.94 in x 3.94 inch)120 size: 120mm x 120mm (4.72 in X 4.72 inch)140 size: 140mm x 140mm (5.51 in x 5.51 inch) Material: high quality aluminum alloy Package included:1 pack of 90 degree positioning squares