?Durable and rustproof material?Our 90 degree angle clamps are strongly constructed with all-aluminum casting, red rustproof mask outside, sturdy and durable. ? Independently adjustable rotating jaw? Only need one finger to rotate the screw, can rotate and adjust according to different thickness of work pieces. ? Maximum 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, fish tank fixing, photo frame reinforcement, cabinet 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.