HKD-Pro Hook-On Conversion Bracket for Headboard Footboard to Bed Frame #69 Down Hook Use to join headboards and footboards with hook-slots to metal bed frames Convert metal bed frames with bolt-on slots to hook-on bedframes Includes one pair. Two pairs required for both headboard and footboard installation. 7 3/8" High, 2 3/8" Wide. Depth of Hook: 1 1/4", Overall Bracket Depth: 1 3/8" Works with twin, full, queen, and king beds