Ideal for woodworkers, cabinetmakers, and DIYer enthusiasts requiring flawlessly right angles assemblies in furniture, frame projects Achieve 90° alignment instantly with clamps, feature indestructibled glass fiber reinforced polycarbonate construction for woodworking joints like dovetails, miters, and T joints Perfect for securing dados, box joints, or pocket hole joinery during dry fitting, or fastener installation without obstructing protruding pin or screws With molded measurement scale and double clamping mode ( table mounted or handheld Maintain square alignment across varied stock thicknesses using the open design base, enabling unobstructed nailing / screwing along full joint lengths, Manufacturer: RGYBAO