Klein Tools 3/16-Inch Nut Driver, 3-Inch Hollow Shaft

Yes, within limits. The 630-3/16 has a full hollow shaft, so a protruding bolt or stud passes up inside it instead of bottoming out. The shaft measures 3 inches (7.6 cm), which is how much stud length it can swallow. Klein calls out stacked circuit boards and other long bolt work as the intended use, and internal flanges anchor the shaft so it resists twisting under torque.

Same 3/16-inch hollow-shaft driver, different tip. The 630-3/16 is the standard Cushion-Grip tip; the 630-3/16M has a magnetic tip that holds the nut on the socket so you can start it one-handed or in an overhead box. Note the magnet fights the hollow-shaft purpose a little, so if your main job is running nuts down a long stud, the standard 630-3/16 is the one.

Two ways. The handle end is color coded, black on the 3/16-inch, and Klein's Tip-Ident marking on the handle end shows the driver type and size so you can read it while the tool is standing in a pouch or drawer. That matters on a service call where you carry the full SAE range.

Overall length is 6.75 inches (17.2 cm) with a 3-inch shaft, and it weighs about 0.2 lbs. That is a standard pouch-length driver, short enough to ride in a screwdriver loop but long enough to reach into a panel gutter.

Klein states the 630 series nut driver meets or exceeds applicable ASME/ANSI specifications, and it is made in the USA. The shaft is premium chrome plated for corrosion resistance, which is what keeps it usable in damp mechanical rooms and service trucks.