IDEAL Industries Square #2, 1" Insert Bit

It has a 1/4 inch hex body and fits all standard multi-bit screwdrivers and power drills. It's an insert bit, so it has a retaining ring notch rather than the power locking groove found on IDEAL's power bits. In a drill chuck or a magnetic bit holder that grips on the hex, it seats fine; if your holder or driver specifically requires a power groove for locking, use a power bit instead.

A #2 square tip is the common size for the square drive and combination head screws used on receptacles, switches, device covers and panel terminals. This IDEAL bit is a square #2 in a 1 inch insert length, so it reaches into a device box without a long extension. Smaller square drive fasteners take a #1 and heavier structural screws a #3, so check the recess before you buy a bulk pack.

Yes. The tip is a patented Combo Head design that engages the full fastener, so it works in combination square/Phillips recesses as well as straight square drive. That matters on ground screws and device screws, where a mix of recesses is common on one job.

S2M tool steel with a custom heat treat, machined to tight tolerances for fit in the recess. That's the standard spec for a bit intended to be driven repeatedly rather than a one-off, and tight tolerance on a square tip is what keeps it from rounding the recess corners.

Yes, the bit is stated as 100 percent made in the U.S.A. That's the answer institutional and government procurement usually needs when domestic preference language sits in the contract.