Platte River 109916, Bits, Drill And Boring, Plug & Tenon, 1-1/2" Rtss Plug Cutter Cut clean plugs in a variety of wood. Specifications: Cut Diameter=1-1/2 in, Cut Length=3/8 in, Material=STAINLESS STEEL Specifications: Overall Length=2-1/4 in, Shank Diameter=1/2 in