Tallon Mini Socket Installation Tool (28mm / 1 1/8" hole-saw) A 28mm (1.1"/ 1 1/8") carbide tungsten tipped hole-saw with 2mm pilot drill bit. Will cut steel, fiberglass or plastic. Cutting teeth designed for quick, clean and easy install for the following Tallon Sytems products: Tallon Mini Socket Round. Pilot drill helps you get your hole exactly where you need it.