Cut a quarter-round shape bounded by fillets, known as a bead, in one pass by this bit. The width of one fillet is set by the pilot bearing size, while the other is controlled by the depth of cut. A beading bit can be transformed into a corner rounding bit by changing the bearing (& vice versa). Bit #49619 max RPM is 28,000. Bit #49622 max RPM is 18,000 and to be used in table mounted routers only.