OIE1056 Features: * Fluted sleeve standard on all models except 6200, 6206, 6204, 6208, 31138, which are smooth and ground * 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 * At minimum capacity will hold a No. 80 (.0135in/.344mm) drill * Equipped with positive drive slot * Mechanism: Plain Bearing * Type: Keyed * Price is for 1 Each