This item has been stored in a warehouse for a long time and is unused. Made by Yokota, compatible with D stainless steel and D aluminum rails only. Please note that it will not fit other curtain rails. Includes 4 wood screws (3.5 x 20). Once the rail is inserted into the bracket, it cannot be removed by hand. To remove the rail, use a flathead screwdriver to pull the black resin in the center towards the screw hole.