Specifications:

• 5/16" Hex Shank
• 1/4" Hex Shank with E6.3 groove    

          Drill        Bolt

• 3.0mm      1/4"
• 4.0mm      5/16"
• 4.5mm      3/8" 

Features:

• Adjustable auto-stop collar controls depth of countersink pilot holes.
• Anti-clog debris holes are for scraps out easily while drilling.
• Auto-stop collar free-spins at the fixed depth.
• Special o-ring protects the workpiece surface.
• Sharp, three-flutes counterbore.
• Parabolic HSS drill bit won't enbed scraps in grooves of drills
• Drill bit is replaceable.

Order Information:

• Minimum Order: Negotiable
• FOB: Taiwan