Application: CAFORO bed frame brackets adapter is the perfect for you if you’re making size modifications to your bed or changing the headboard/footboard. If you have a Full Size Bed Frame and a Queen size Headboard or Footboard this pair of brackets will allow you to join the two together securely. You can attach both headboards and foot boards using these brackets. Possible Uses: - Using a Full (Double) Size Headboard/Footboard with a Queen Size Bed - Using a California King Headboard/Footboard with an Eastern King Bed - Making up small size differences between a standard bed frame and odd-size antiques Dimension: 5" Wide x 5 1/4" Tall (Larger Side) x 3-7/8" Tall (Smaller Side), This size bracket is ideal for using your existing Full Size headboard with a larger Queen Size mattress or vice versa. The Queen Modification Plate will also convert King to California King. Modifications can be made with other applications as long as the size differential is within 4". Package includes: Queen Bed Modification Plate – 2. Bolts – 8 (4 long and 4 short). Screws – 8. Washers – 8. Nuts – 8. LIFETIME WARRANTY