OIE1028 Features: * 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 * Equipped with locking collar 1-1/16 - 20 thread * Equipped with positive drive slot * Equipped with pin-type positive drive * Mechanism: Plain Bearing * Type: Keyed Chuck * Price is for 1 Each