Bosch (SP508) #8 Hex Shank Screw Pilot Bit

Features:

• Screw pilot bits – feature hex shanks for countersinking precision pilot holes
• One-step operation – provides countersinking and counterboring in one operation
• Replaceable drill bits – for longer accessory life
• Adjustable countersink depth – for use with an Allen® wrench
• Fits most drills – hex shanks fit corded and cordless drills. Ideal for drill press
• Versatile material use – able to be used in wood, plastic and composite materials