This Birdsmouth Router bit will cut stock up to 1-1/16" thick to make 16 sided objects. The shank is 1/2". Create multi-sided polygon objects such as barrels and planters with precise angles and lots of gluing surface Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge For use on table mount router Silver induction brazing for maximum strength and durability, Weight: 0.15 Pounds, Manufacturer: Yonico