Shelf clips lock glass shelves in place for a secure mount. Locking glass supports incorporate a rubber tipped set screw to firmly hold glass shelves in place:Made from plated steel.Clips are 3/4" square with an internal height of 5/16"Set screw adjusts to hold glass from 1/8" to 1/4" thick.Mounting pin is 5mm diameter x 5/16" long.Packages include a nylon bushing that fits into a 9mm diameter x 1/4" deep bore to allow shelf clips to be converted for use as pivot hinges for glass doors.Note:inserts are not intended to be used as support sleeves for shelf applications.