Four 10-32 Tee Nuts. Flange is .75 inch diameter part number 07.2812.0000. Depth is about .25 inch. For use with 10-32 screws (commonly 07.2794.0000 3/8 screws and 01.1315.0016 Neo Back Washers for Comfort Fit thigh braces). This part is used for Necky thigh braces, Old Town thigh braces and other assorted mountings.