Made in the USA W.L. Fuller Made of carbon steel, heat treated, & hardened for long tool life Quick change For use in soft woods & most hardwoods Four flutes for clean cutting & accurate boring The plug diameter is tapered slightly from on size to .025\” oversize 1/4\” hex ball shank Product Description Specs A high quality American-made quick change plug cutter made by WL Fuller. Made of carbon steel & hardened, this plug cutter is very well-built, durable, & cuts clean holes in soft woods & most hardwoods. These tapered type plug cutters cut fast & make smooth chamfered plugs for easy starting in counterbored holes. After cutting, the plug remains in the board & can be broken out with a screwdriver, or the board can be sawed to free the plug. The plug diameter is tapered slightly from on size to .025\” oversize. Made in the USA. The W.L. Fuller Co. is a family owned, third generation manufacturer of the best countersinks, counterbores, plug cutters, taper point drills, brad point drills, & step drills. All made 100% in the U.S.A. today. With over 60 years experience manufacturing tools to cut woods, plastics, & metals, Fuller provides tools you need to get the job done while saving you time & money. All of their products carry their satisfaction guarantee. Product Cutting Diameter Max Length Ball Hex Shank Size Overall Length Model 1/4\” Plug Size Inside Diameter 1/4\” 3/8\” 1/4\” 1-5/8\” QP4 5/16\” Plug Size Inside Diameter 5/16\” 3/8\” 1/4\” 1-5/8\” QP5 3/8\” Plug Size Inside Diameter 3/8\” 1/2\” 1/4\” 1-7/8\” QP6 7/16\” Plug Size Inside Diameter 7/16\” 1/2\” 1/4\” 2\” QP7 1/2\” Plug Size Inside Diameter 1/2\” 1/2\” 1/4\” 2\” QP8 5/8\” Plug Size Inside Diameter 5/8\” 5/8\” 1/4\” 2-1/8\” QP10