Cove Box Router Bit Set Solid Carbide Double Flute Core Box, Half Round Groove Solid Hardened Steel Bodies. 8 Piece Core box router bit set: 1/4" Shank, 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 7/8" 1"Cutting Diameter; High-hardness alloy material, fast cutting, strong . Carbide tipped for improved speed and long life, hardened and sharpened; Solid Hardened Steel Bodies with Anti Kickback Design; Build-up Heat Resistant Coating. Suitable for cutting solid wood, particle board, plywood, MDF and different wood composites; Round nose routers for cutting, beading, fluting and general ornamentation. Industrial quality core box router bit, cemented carbide, long service life, strong wear resistance; Material may be cut and generate a column, a semicircular groove. Can be used in handheld, desktop and CNC routers. Use these round nose cove box router bit to enhance your hardwood working performances and create handmade furniture on your own. Any problems, please let us know, we will solve your problems ASAP.