HHIP .157"/4mm Pilot Drill Chuck Key For Drill Chucks IMPORTANT: Pilot hole size determines the drill chuck key you need. Use a caliper or ruler to accurately measure the pilot’s size (the hole diameter where the key fits into the chuck). CONFIRM CORRECT SIZE BEFORE ORDERING. This key is specifically designed to fit drill chucks with a .157"/4mm pilot size. Compact, lightweight and precisely machined to ensure a secure fit and proper engagement with the chuck. Made from durable and sturdy steel for reliable performance. ONLY COMPATIBLE with drill chucks with .157"/4mm pilot hole size. Choose a replacement drill chuck key that matches the pilot size of your drill chuck for proper fit and functionality. Ideal for tightening and loosening jaws on a drill chuck.
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