About this item ㈩gh Quality Material㹰 degree positioning square made of high quality aluminium alloy with anodized surface that insures optimal durability and lightweight usability. 㹰 degree angle ruler㳄 woodworking ruler with clear scale in inches and millimeters for measuring length to positioning more accurate. ㅡsy to Use㌠shaped corner clamp is easy to use. Place a square in the corner of the two stock pieces you need to square and secure with a set of clamps. 㒯unded Cornersゥveled edges, No damage to hands, no deformation. Easy to handle and won't damage fragile cutting edges 㗩de Applicationメrpentry right angle jig set professional use to assemble and DIY by claping boxes, drawers, cabinets, frames, furniture cabinets, etc.