Specification: Material: Full Aluminum Die Casting Angle: 90 degree Color: Red MATERIAL These right angle clamps are solidly constructed with all die-cast aluminum casting, red anti-rust mask outside, which are sturdy and durable. MAXIMUM CLAMP RANGE 3 inch / 77mm, and not only perfect for holding the joint at a 90 degree angle, can also be used for a 45 degree clamp. They are easy to install, which saves labor time and reduces labor difficulties. MULTI-FUNCTION USEPerfect fit for picture frame reinforcement, woodworking , aquarium fixing, cabinet and furniture connection, wooden DIY project holding, etc. INDEPENDENTLY ADJUSTABLE JAWS Jaw and pivot points allow the clamp to rotate and adjust to different thicknesses of workpieces. DESIGN The design uses a reinforced connection, which can prevent excessive force caused by breaking.