MLCS 7860 Box Joint Router Bit 1/2inch Shank Strong, beautiful box joints are ideal for jewelry box drawers, humidors and a variety of small projects The long 1/2 inch arbor holds 5 (5/32 inch) three-wing, carbide-tipped slot cutters, 4 spacers and a ball bearing guide The bearing is designed for 1/2 inch depth of cut, but make shallower cuts by adjusting your router fence. 1-7/8 inch Large Diameter. 1-7/16 inch Carbide Height. 1/2 inch Shank.