Klein Tools Klein Tools' 5/16 in. Nut Driver w/ Cushion-Grip Handle features an ergonomic handle designed to enhance torque and reduce hand fatigue during repetitive tasks. The Cushion-Grip design improves comfort and control, even in extended use scenarios. Engineered for professional performance, it offers consistent durability and precise engagement across a range of fastening jobs. Whether used on job sites or in workshops, this nut driver supports dependable results and efficient workflow with a balance of strength and comfort.