ronin factory hook on bed frame brackets adapter for headboard extra heavy duty, set of 2 brackets with hardware, 711 bracket, bolt-on to hook-on conversion ronin factory bed bracketz is pleased to offer the universal bed frame bracket to hook style adapter. if you have a new style of metal bed frame that does not have the hooks or claws to attach to your existing headboard, this pair of brackets will allow you to join the two together securely. you can attach both headboards and foot boards using these brackets. please note if you want to attach both head boards and foot boards you will need to order 2 sets.