Vernon 82 Cham-Bits, 5/16″ Drill Size, .3125″ Decimal Diameter, 13/16″ Body Diameter, 1-3/8″ OAL

• Convert a standard drill into a combination drill countersink.
• Radial relieved cutting edge provides clean chatter free cutting.
• Fully adjustable, can be located anywhere up down the flutes of the drill locked into position with two driving set screws provided.
• Ideal for machining countersinks for flat head machine screws.
• Offered in the most common machine screw clearance hole tap drill sizes.
  Two fluted cutter snugly fits on the clearance diameter of your drill, enabling it to provide a full concentric countersink.
• Drill Not Included.

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