Klein Tools 65502 3/8-Inch Drive Deep Socket Wrench Set, 8-Piece

The 65502 set is built on a 3/8-inch square drive, so it mounts on any standard 3/8-inch drive ratchet, extension, or breaker bar. Note the drive is the only interface Klein states for this set, so a 1/4-inch or 1/2-inch ratchet needs an adapter.

Six-point. The eight deep sockets in the 65502 set are 6-point, which grips the flats of a hex fastener rather than the corners, so it's the pattern you want on rusted or already-rounded nuts in panel and conduit work. If you need to catch a fastener at more angles in a tight spot, a 12-point set is the alternative.

Inch. The 65502 is an SAE/inch deep socket set with a hex drive type, so it covers fractional-inch fasteners only. If your work is metric, this is the wrong set.

Deep sockets reach down over long threaded studs and bolts, which is the usual situation on strut, all-thread hangers, and panel and enclosure hardware where a standard socket bottoms out on the thread before it touches the nut. That is the case the 8-piece 65502 is built for. For shallow, close-clearance fasteners a standard-depth set is easier to get a ratchet onto.

Order it as Klein Tools 65502. One MPN covers the complete 8-piece set, so there is nothing further to specify on the order.

The set measures 10.125 x 3.375 x 1.8 inches and weighs 2.66 lb (Klein also lists it at 2.7 lb / 1.2 kg), so it drops flat into a bucket pouch or the bottom of a tote without eating much room.

Klein lists TT1 and TT2 as accessories for the 65502, so those are the add-ons to pair with the set rather than guessing at a generic rail.