【Durable and rustproof material】Our 90 degree angle clamps are strongly constructed with all-aluminum casting, red rustproof mask outside, sturdy and durable. 【Adjustable rotating jaw independently】Just one finger to turn the screw, can rotate and adjust according to different thickness of work pieces. 【Max Clamping Range】3 inch / 77mm. Not only perfect for holding the joint at a 90 degree angle, it can also be used for a 45 degree clamp. And the rivets are fixed, not easy to fall off, and convenient to use. 【Multi-functional locator】Suitable for woodworking, aquarium fixing, photo frame reinforcement, furniture connection and furniture, wood DIY project outfit, etc. 【Package includes】A set of 4 pieces 90 degree right angle clamps, to satisfy common daily use. Save working time and reduce working difficulties, very convenient and economical.