Klein Tools 32933KIT Impact-Rated SAE and Metric Socket Set, 12 Sizes

Built around two impact-rated 5-inch shafts and made from alloy steel, the Klein Tools 32933KIT brings SAE and metric fastener sizes together in a compact flip-socket format.

Its six flip sockets provide access to 12 hex driver sizes, so you can switch between common imperial and metric fasteners without changing to a separate size set.

For jobs that call for an impact driver, the quick-connect hex shaft attaches directly. If the task involves screwdriver bits, the 1/4-inch bit-holding feature adds another useful option. It suits a different need than a single-purpose socket set: one kit covers both fastener systems and can also hold a bit.

Key features

Each of the six flip sockets gives access to two sizes, covering 1/4, 5/16, 3/8, 7/16, 1/2 and 9/16 inch, along with 7, 8, 10, 12, 13 and 14 mm. The colour-coded sockets make size identification more straightforward when moving between fasteners, while their flip design keeps the alternate size close at hand.

All components are impact-rated and designed for use with an impact driver. The quick-connect hex shaft also fits a Klein quick-connect handle, offering another way to use the sockets, the handle is not included. A magnet helps hold fasteners during one-handed driving, and the shallow socket depth is optimized for hex-head fasteners. Buyers often describe the set as handy and speak positively about its perceived quality, while comments on the design are mixed.

Fit and sizing

The SAE and metric range is useful when a project includes fasteners from both measurement systems. For example, a repair involving different hardware can call for an imperial size on one fastener and a metric size on the next, the flip sockets let you move between the paired sizes without setting aside one system to reach for another kit.

The hex shaft connects to an impact driver, and the 1/4-inch bit-holding feature supports screwdriver bits. The set’s sockets can be stored on the shaft in any order or orientation, making it easier to keep the components together between tasks. Choose the matching listed size for the fastener before driving.

Everyday use

For routine fastening and heavier-duty driving applications, the impact-rated construction brings the shafts and sockets together in a set made for impact-driver use. The flip format is practical when several common sizes are needed over the course of a job: turn to the required size, connect the shaft and continue, rather than handling a collection of separate sockets.

The bit holder extends the set’s role beyond nut driving, letting the 1/4-inch socket hold a screwdriver bit. That makes it useful when a task moves between hex fasteners and screws. Colour coding helps distinguish sizes at a glance, while keeping the sockets on the shaft provides a simple way to organize the set after use.

Final verdict

The Klein Tools 32933KIT is a practical fit for impact-driver users who regularly work with both SAE and metric hex fasteners and want a bit-holding option in the same set. Its 12 sizes, flip-socket access and impact-rated shafts bring useful range to repair and fastening tasks without requiring a separate socket for each size.