Two cutter 1/2 inch shaft plungable carbide round over bit with 1/2 inch radius. These bits are used for bead, veining and of course work edge work. Select appropriate adapter styler for your machine. Select W/Bit Adapter for old-style QuickChange Chuck - Adds $10 to cost of bit Total w/bit adapter is $45.95 or Select w/No Adapter for new CarveTight Spindle Total w/out adapter is $35.95 This item will also require its own 1/2" Rubber Stop Collar; sold separately.