The scales all start from the right-angled edge, making it easier to use. The screws are made of 304 stainless steel and the screw nut is made of copper core, long service life. Laser engraving, not easily damaged or blurred. Aogbra 4Pcs 90 Degree Positioning Right Angle Clamps 5.5 Aluminum Alloy Woodworking Carpenter Corner Clamping Square Tool for Picture Frame Box Cabinets Drawers (4Pcs Red WEN CL436R 4-Inch Right Angle Clap For Woodworking And Pocket Hole Joinery | atelier-yuwa.ciao.jp Professional measuring angle right angle clamp for measuring picture frames, drawers, cabinets, frames, furniture cabinets, etc. Maintains the perfect right angle when assembling frames, cabinets or almost any box. High-quality material; made of high-quality aluminium alloy with high hardness, anodised red surface, corrosion resistant. Professional: 4-piece 140 mm/5., 5 inch L-shaped 90 degree clamping square, 12 pieces of mounting clips. Stability: the high-quality angle clamp is made of robust aluminium alloy. Over dit item Professioneel: 4-delige set van 140 mm L-vormige 90 graden klemvierkant, 12 bevestigingsclips. Professionele meethoek, rechthoekige klem voor het meten van fotolijsten, laden, kasten, meubels, enz. Behoudt de perfecte rechte hoek bij het monteren van frames, kasten of bijna elke kist The clamp ensures a stable fixation of workpieces. Aluminum L-shaped Clamp Gridfinity Wen 4.5-Inch Right Angle Clamp/Square By DeltaMush Right Angle Fixing Clip