1SET 90 Degree Positioning Squares Right Angle L-Type Woodworking Clamps for Picture Frames, Boxes, Cabinets or Drawers Descriptions: Made of aluminium alloy, it will lasts for years. Anodized red surface, durable and resistant to corrosion, rust prevention. 2 Scales: Metric and imperial There are different holes for you to fixing, ensuring your work more convenient. Place a square in the corner of the two stock pieces you need to square and secure with a set of clamps Beveled edges, easy to handle and won't damage fragile cutting edges. Designed to be clamped to boxes, picture frames, shelf cabinets, 90 degree weld and for outside corners Features: L Shaped Angle Clamp, Strong Fixing ability Double Accurate Scales: Two measurement: Metric and imperial Adjustable Fixing Blocks: The clamps fit for the wood board thickness from 7/16" to 1-9/16", and 90 angle can offer strong balance for convenient use Beveled Edged Design, Easy to Use: With beveled edges, it is easy to work and not damage the fragile cutting edges. Professional Woodworking Tools: This right angle jig set are professionally used to assemble frames, drawers, boxes and other furniture. It also can be used for woodworking and welding. Practical tool for DIY makers, engineers, carpenters etc. Specifications: 100 Size: 100mm x 100mm (3.94in x 3.94in) 120 Size: 120mm x 120mm (4.72in X 4.72in) 140 Size: 140mm x 140mm (5.51in x 5.51in) Material: High quality aluminum alloy Package included: 1 Pack 90 Degrees Positioning Squares