www.amazon.com MK 158368 MK-130/3 3 Speed Hand Held Wet Core Drill "The MK-130/3 is a fast, efficient drilling system. Use it hand-held for up to 3" diameter and/or rig-mounted for up to 6" diameter core bit. The MK-130/3 combines a robust all aluminum housing with a compact size and powerful 17 AMP motor. The heavy-du
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