The Malco Products Impact-Grade Magnetic Chuck Drivers Line is designed to drive in screws easily and quickly. The hex chuck drivers are a distinctive blue color, signaling performance quality that can withstand the kind of impact driver stress that is characteristic for each fastening application. According to the company, all Malco Impact-Grade power drivers are precisely machined for positive, fail-proof engagement of the fastener head, and feature high-torque steel construction and a design that absorbs and dissipates impact-driver-induced stress at peak loads.