Jacobs®

1-piece fluted sleeve construction. Ball trust bearing reduces friction in chuck closing mechansim. Through-hardened sleeve teeth, nose, and keyholes for wear resistant. Maximizes gripping force and drilling accuracy. Treated to ensure thread life and high gripping surface hardness. Jaws center-ground for absolute straightness and alignment. For heavy-duty, close tolerance production drilling. For production drilling equipment, jig borers, milling machines, lathes, and radials
Patented keyless design. Rugged construction. High mechanical advantage converts hand tightening torque into superior bit gripping force. Ergonomic design. Fast bit changing. No lost key delays. For variable speed corded and cordless portable drills
Fluted sleeve standard on all models except 14451. Jaws center-ground for absolute straightness and alignment. Jaws specially treated to ensure extended thread life and high gripping surface hardness. One-piece sleeve eliminates crack between driving teeth often found in other designs. Through-hardened sleeve teeth, nose, and keyholes for wear resistance. For portable, bench, or floor mounted power tools
Through-hardened jaws. Durable gripping surfaces. For corded or cordless reversible or non-reversible power drills
Soft steel handles. Precision crafted