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
At minimum capacity will hold a No. 60 (.040in/1mm) drill
