Simple to install using ¼” or letter ‘N’ drill bit. Drill two 3/8″ deep holes spaced 1-5/16″ apart. Tap into place gently until flush with surface. The sharp flanges hold insert without the use of glue or expansion. Included 10-24 screws will attach a wide variety of items but longer screws maybe necessary for some applications. Easy to install Instructions included Versatile and useful
