Yonico 15122 Large Lock Miter Router Bit with 45-Degree and 1-Inch Stock 1/2-Inch Shank Route interlocking 45 degree miters on stock between 3/4" and 1" thick. This large router bit has a diameter of 2-3/4" and a 1/2" shank. Join boards at a 90 degree angle with an interlocking profile for a perfectly aligning joints Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge For use on table mount router only - not recommended for use with MDF or plywood Silver induction brazing for maximum strength and durability Satisfaction Guaranteed & Lifetime Warranty Industrial Quality Router Bits C3 Micro-grain Tungsten Carbide Cutters Solid Hardened Steel Bodies with Anti-Kickback Design Build-up and Heat Resistant Teflon Coating Satisfaction Guaranteed and Lifetime Warranty