IDEAL Industries 35-939 12-in-1 Multi-Bit Screwdriver & Nut Driver w/Combo Head™

The 35-939 covers twelve drive tips in one handle: 3/16 inch and 1/4 inch slotted, #1 and #2 Phillips, 3/16, 1/4, 5/16 and 3/8 inch hex, T10 and T15 Torx, and #1 and #2 square. That is the spread an electrician hits on a service call, panel screws, device screws, terminal lugs and the square drive on newer devices, without carrying a pouch of separate drivers.

It does both. The 35-939 is a combined multi-bit screwdriver and nut driver, and the hex sizes it carries are 3/16, 1/4, 5/16 and 3/8 inch, which is the range that covers most sheet metal screws, ground lugs and enclosure hardware. Screwdriver bits and hex nut driver sizes live in the same handle, so you are not swapping tools mid box.

Yes, #1 and #2 square (Robertson) tips are both in the 35-939. That matters because a lot of current devices and breaker terminals use a combination head that takes square drive, and a Phillips in a square recess is how you round out a terminal screw. The driver also carries #1 and #2 Phillips and 3/16 and 1/4 inch slotted for the older devices in the same building.

For general electrical service work, mostly. The 35-939 consolidates two slotted sizes, two Phillips, four hex nut driver sizes, two Torx and two square drives into one handle, so the common device, panel and enclosure fasteners are covered by a single tool. What it does not replace is anything outside those twelve tips, long shank or deep well nut drivers for recessed studs, and larger Torx.

There is a single configuration. The IDEAL 12-in-1 Multi-Bit Screwdriver and Nut Driver with Combo Head is ordered as 35-939, with no size, finish or bit set options to specify. Order the number and you get the full twelve tip complement.