9-in-1 heavy-duty screwdriver/nutdriver offers superior torque for tough applications. Interchangeable shaft holds 6 universal tips; converts to 3 nut driver sizes and 1 hex driver. Nut drivers are heat-treated for added strength and improved torque. Cushion grip handles provide superior comfort. Contains: 3/16" and 1/4" slotted, #1 and #2 Phillips, 1/4", 5/16", and 3/8" nut drivers, #1 and #2 square-recess.