Klein Tools 32525 Tamperproof Bit Set, 32 Piece

The Klein 32525 holds 32 bits covering six security and hex families: TORX in T7, T8, T10, T15, T20, T25, T27, T30 and T40; Spanner in 4, 6, 8 and 10; Tri-Wing in 1, 2, 3 and 4; TORQ-SET in 6, 8 and 10; metric hex in 2, 2.5, 3, 4 and 5 mm; and fractional hex in 3/32, 7/64, 1/8, 9/64, 5/32 and 3/16 inch. A 1/4 inch square to 1/4 inch hex adaptor is also in the block for driving sockets.

Each bit is a 1 inch (2.5 cm) insert bit, so it seats in any standard 1/4 inch hex bit holder, drill chuck, or magnetic bit tip holder. At that length you will usually want a holder or a bit-driver handle rather than chucking the bit bare, and the included block slides over most screwdriver shafts so you can work straight off a driver.

It covers the security head types you run into on electrical panels, vandal-resistant fixtures, restroom partitions and dispensers: TORX (standard, not pin-in-head), Spanner (snake eye), Tri-Wing, TORQ-SET, plus metric and fractional hex. If the screw has a pin in the center of a TORX recess, that is a TORX-PLUS or pin-in TORX head and needs a different bit.

Yes, the 32525 bits are magnetized, which matters when you are backing security screws out of a panel cover or ceiling device and do not want the fastener dropping into the enclosure. The bits are heat-treated industrial steel.

These are standard insert bits, not impact-rated, and Klein warns against prying or chiseling with them. For a seized tamperproof fastener, break it loose with a bit holder on a hand driver or a low-torque setting rather than hammering an impact driver into a 1 inch insert bit. Eye protection is called for in either case.

The set meets or exceeds applicable ASME/ANSI specifications and is assembled in the USA of US and imported components, which is what procurement groups ask for on domestic-preference orders. Order by Klein part number 32525.

Bits live in a gray PVC block that holds all 32 pieces and slides over most screwdriver shafts so you can pull a bit without unpacking anything. The whole set measures 6 x 2.8 x 2 inches and weighs 0.425 lbs, small enough for a pouch pocket or a van drawer.

A 1/4 inch square to 1/4 inch hex adaptor ships in the set, so you can put a 1/4 inch drive socket on a hex bit holder or driver and turn nuts with the same handle you use for the bits. No extra adapter purchase needed for that.