The CMT adjustable rounding and chamfering set is a two piece set which are easy to set up in your shaper. The system allows you to round over both top and bottom edges in one pass with a radius of 5/64, 1/8, 5/32, 3/16 and 15/64 inches and it allows 45 degree chamfering in material from 18mm to 50mm thick. The improved design with shear angle guarantees a perfect finish. Tool features heavy duty aircraft aluminum body, 2 solid carbide knives, 4 radius knives, 21 spacers, manual feed and pins for the automatic positioning of the knives. See Shaper Accessories for bore reducers. Extra knives are sold only in pairs. Legend below explains sizing. Select your item(s) then click Add to Cart.