The 29 piece Cobalt M-35 metal index drill bit set provides extra hard drill for greater wear. The 135 degree split point tip starts on contact, cuts with less force. Contains a rubber over molded case that protects kit if dropped. Automatic indexing for easy bit access and identification. Includes tap & drill selection chart for convenient reference and provides removable cartridges easy to carry bits from case to worksite. Sizes include 1/16" to 1/2" in 1/64" increments.