Klein Tools 32557 Heavy-Duty Multi-Bit Screwdriver/Nut Driver Features:

• 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'' (5 mm) and 1/4'' (6 mm) slotted, #1 and #2 Phillips, 1/4'' (6 mm), 5/16'' (8 mm), and 3/8'' (10 mm) nut drivers, #1 and #2 square-recess, 3/8'' hex driver