MS RND PLASTIC SC TS Good level,17",New bevel shape,Plastic,Flip slider Quickly release and Slow close hinges(forward/backward adjustment),Add 2 pcs of rubber pads to make it more securely fasten,Prevent shifting,Will not loosen, Packaging hinges displayed. Packaging includes hinges displayed clearly 17" size with improved bevel shape design Durable plastic construction Flip slider for quick release Slow-close hinges with forward/backward adjustment Includes 2 rubber pads for secure fastening Prevents shifting and will not loosen