5 PC HSS Prentice Drill Set • Prentice drills (DR50 / DR51) are available in either 5 or 8-piece set List Number DR50705 Substrate HSS Surface Treatment Black & Gold Angle 118° Flute Type Regular Spiral Package Quantity 1 Number 5P Includes 9/16 5/8 3/4 7/8 1 Case Type Metal SKU: DR50705 Category: HSS Related products 1/16 – 3/8 By 1/64 HSS Bright Jobber Drill Set Item #: DR06721 # 1 – # 60 HSS TiN Jobber Drill Set Item #: DR06060 # 61 – # 80 HSS TiN Jobber Drill Set Item #: DR06020