Klein Tools C2355 #2 Combo Power Drivers 3-1/2" Pk 5

Combination head screws, the slotted/Phillips combo heads found on most electrical devices and fittings: receptacles, switches, plates, box fittings. The #2 tip is precision machined for that head shape rather than for a pure Phillips or pure slotted screw, so it seats without camming out of a combo head the way a straight Phillips bit tends to.

At 3-1/2 inches the C2355 is a power-length bit rather than a 1-inch insert bit, so it reaches past a plaster ring or a deep box straight out of the chuck with no bit holder or extension needed. Shorter insert bits generally need a magnetic holder to get the same reach.

For device and fitting screws with combination heads, the combo bit is the right call. A #2 Phillips only engages the cross recess of a combo head and rides up under torque; the C2355 tip is machined to the combo profile so it stays down in the screw. If the screws on your job are true Phillips or straight slotted, use a bit ground for that head instead.

The C2355 bits are custom heat-treated to take the torque needed to drive all types of combination head screws. That heat treatment is what keeps a 3-1/2 inch power bit from twisting off at the shank under a driver, which is the usual failure on device screws run hard.

Five bits per pack, all the same #2 combo tip in the 3-1/2 inch power length. That is a consumable count, not an assortment, so an electrician trimming out a floor of devices is buying spares of one bit rather than a set of sizes.

Yes, the C2355 combo power drivers are made in the USA. That matters on public and institutional work where domestic sourcing is written into the purchase terms.

Klein Tools C2355 is the manufacturer part number for the five-pack of #2 combination-tip power drivers in the 3-1/2 inch length. Order by C2355 to get the pack rather than a single bit.