FLEX Impacks 20-Pc. 1" Mixed Allen & Slotted Impact Driver Bits deliver precision, durability, and control for every job. Designed to power through tough tasks, these impact driver bits are engineered for optimal impact distribution, ensuring that no energy or effort is wasted. Built to withstand demanding applications, they absorb torsion and torque at peak power, featuring a specially constructed material composition that maximizes hardness and strength for exceptional bit life. The set comes in an IMPACKS bulk bit case with compression fit sides, allowing for customizable organization and easy accessibility, compatible with any case in the STACK PACK™ lineup. Model Number: FA101009-20