4 PCS Zinc Alloy 90 Degree Right Angle Corner Clamp Picture Photo Frame Corner<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Material: Zinc Alloy</li><li>Fit for Woodworking， fish tank fixing， Picture Frame reinforcement</li><li>This clamp with steel threaded vise screws and two countersunk mounting holes for permanent installation on the bench</li><li>gluing two boards do not over tighten the joint forcing the glue out of the joint - this will cause a weak joint and you could break or pull the washer out of the clamp</li><li>The design use of reinforced connection， which helps to prevent excessive force caused by breaking</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51bpM3RxtiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61CyOxcW5LL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Hx1liMwnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Lfs9MaY8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Vs58Lw1SL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41d5B9YI22L.jpg" noproxy>