Insulated Cushion Grip Slotted Screwdriver 3.5 x 100mm (9/64 in) In Carded Hanger. Wiha Insulated SoftFinish Cushion Grip Drivers are the standard for premium quality featuring ergonomic cushion grip handles for comfort and control, dual durometer construction for long-lasting durability, and handles directly molded to the blade for a permanent bond.