CMT's exclusive design which allows the perfect fix for undersized plywood panel. The tongue cutter features opposing shear angles to obtain flawless finishing on a large variety of materials such as plywood, softwood and hardwood. For use on a table-mounted router, not for handheld routers. - Adjustable at 0.002 increments; For groove width from 13/64 to 17/32 inches; Cut stock thickness of 1/2 to 1-1/4 inches; Features micrograin carbide for longer life. See the images for detail size information. Select your item(s) then click Add to Cart.