5/16" Cobalt Stubby Threaded Shank Drill Bit BoltsandNuts.com The bits can be stored

The bits can be stored in the included rubberized bit rail that securely grips the bits so they can't fall out

Body Dia 2-3/4"

Part Number: 50X150CPSS

and 12-cavity parts trays that fit inside the drawers

Part Number: EZ-EK41015

5/16" Cobalt Stubby Threaded Shank Drill Bit BoltsandNuts.com The bits can be storedProduct Description Threaded shank drill bits are type D adapter style. They are made from M42 8% cobalt and are manufactured to NAS 965 Type "D" specifications. They have 135 heavy duty split point and surface treated for drilling hard, tough, high tensile strength materials. When drilling low tensile strength materials, the Type "D" cobalt drill will have a significantly greater tool life than the NAS 965 Type B high speed steel adapter drill,