The Yonico 15334 lock miter set includes 3 of the most popular lock miter bits for a range of stock sizes. The largest miter lock bit has a 2-3/4" diameter and is suited for up to 1" thick stock. The medium sized lock miter router bit has a 2" diameter and is suited for 3/4" stock. The smallest miter lock bit is 1-3/8" diameter and will work best with 1/2" stock. Two flute carbide router bit cutters and 1/2" shanks. Set comes in a solid wood storage case. Silver induction brazing for maximum strength and durability For use on table mount router - not recommended for use with MDF or plywood Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge Join boards at a 90 degree angle with an interlocking profile for a perfectly aligning joints, Weight: 1.8298367746 pounds, Manufacturer: Yonico