Application: Bolt-On to Hook-On Bed Frame Conversion Brackets Hook is Designed to Attach Your Standard Bolt-on Headboard Brackets to Odd-sized Headboards, Perfect for Attaching a Newer Metal Bed Frame to An Older Headboard that Requires A Hook or Claw Style Attachment. Adjustable: The Hook on Bed Rails are Designed With Thin Verticle Slots, Which Can be Cdjusted to The Vertical Height. Dimension: Thickness: 0.1''; 1-7/9" Width; 7-1/4" Height; Packing Included:2pcs #711 Bed Frame Hooks, 8 Screws, 4 Lock Nuts, Headboard Hardware. Tips: You Can Purchase 2 of Thes EItems If You Also Need to Attach the Footboard to The Frame. Satisfaction Guaranteed: 100% Money Back Guarantee If Unsatisfied With Bed Frame Hook Brackets. Application: You Can Use Our Headboard Conversion Brackets Attaching A Newer Metal Bed Frame to An Older Headboard/Footboard or to Retrofit An Older Headboard to a Modern Frame. Saved Your Money From Having to Buy A New Bed, Just Need to Purchase Our Hook Bed Rails for Twin Queen or Full Size. More Durable : Our Hook on Bed Frame Brackets 25% THICKER STEEL than Other Brands! Electrophoresis Black to Prevent Rust and Corrosion, Ensuring A Long Life and Preventing Damage to Your Bed.Everything for You to Have A Better Dream. Versatile: The Hook on Bed Frame Are Versatile to Change Size Thus Accommodate The Various Sizes.The Hook on Bed Frame Brackets Adapter is Designed With Two Thin Verticle Slots, Which Can be Adjusted To The Vertical Height. Easy to install: It saved You From Attaching Hook on Bed Frame Brackets Adapter to the Headboard with Screws. No Measuring, No Drilling. Simply Attach Required Bolts, Hook On, Adjust Height and You’re Good to go. Package Include: 2pcs #711 Bed Rail Hooks, 8 Screws, 4 Lock nuts, Headboard Hardware.