Freud 50-501: 1/2" (Dia.) Top Bottom Bearing Flush Trim Bit Product Description 1/2" (Dia.) Top Bottom Bearing Flush Trim Bit with 1/4" Shank. From the Manufacturer These bits are specially designed to provide precision cuts in almost any timming or pattern routing application. With bearings above and below the cutting edge, these are really two bits in one. 1/2" dia x 1 1/4" carbide height w/ 1/4" shank Specs: Bearing Dia. 1/2", Number of Cutters 2, Overall Dia. 1/2", Overall Length 3-5/16", Shank Dia. 1/4", Carbide Height 1-1/4" Perfect for templates placed above or below the work piece, or to trim laminates or veneer perfectly flush with countertops, shelving and other projects Freud?s Top Bottom Bearing Bits let you rout half the curve in one direction, flip the work piece over and rout the other half in the opposite direction without repositioning your pattern Use on hand-held routers, laminate trimmers, and table-mounted portable routers Cuts all hardwoods, softwoods, plastic laminates and veneered plywood