The Makita B-43365 3/4 inch x 12 inch Hollow Socket is a long-reach hollow socket made for fastening nuts over threaded rod, long bolts, and studs. This is a hollow socket designed for overhead fastening and hard-to-reach nut running. Model Number B-43365. If you work above your head on duct, pipe hangers, ceiling assemblies, or threaded rod supports, this setup saves time by letting the rod pass through the socket instead of forcing you to hand-thread fasteners the whole way.

What matters here is the combination of the 3/4 inch socket size, 12 inch overall length, and hollow shaft design. On jobs where standard sockets stop short because the rod is too long, this tool keeps moving. The added length also helps you reach nuts mounted up in ceiling cavities or around ductwork where your driver cannot sit close to the fastener.

Makita built this with a 12-point socket end for easier fitment on both 6-point and 12-point fasteners. That makes alignment quicker when you are reaching overhead or working one-handed from a ladder or lift. The smooth, chamfered inner well is there for a reason too: it helps prevent the socket from catching and damaging threads during fastening and removal, which matters when you are working on exposed threaded rod that still needs clean threads.

The 1/4 inch hex shank is press-fit rather than a one-piece hollow socket design, and Makita calls out the benefit directly: better durability and torsional strength. In practical use, that means it is built to handle repeated impact driver and drill-driver use without feeling like a specialty accessory you have to baby. It is also lightweight, which makes a difference when you are doing repeated overhead fastening over the course of a day.

This Makita hollow socket is a good fit for mechanical trades, electrical installs, HVAC work, pipe support, strut assembly, and general construction tasks where threaded rod is everywhere. It is especially useful for pros who already run impact drivers for daily fastening and want a faster way to run nuts up long rod without switching to hand tools.

Compatibility is straightforward. The 1/4 inch hex shank works directly with standard impact drivers and drill-drivers, so there is no special adapter to fuss with. If your work regularly involves overhead fastening, suspended systems, or long exposed studs, the Makita B-43365 3/4 inch x 12 inch Hollow Socket is one of those simple accessories that earns its keep fast.

Makita B-43365 Hollow Socket for Faster Overhead Fastening

This is the kind of specialty accessory that makes a very specific job a whole lot less annoying.

• Who it's for: Anyone hanging duct, strut, pipe supports, or other assemblies on threaded rod and tired of spinning nuts on by hand.
• Why it stands out: The hollow design, 12 inch reach, and impact-driver-ready 1/4 inch hex shank solve a real jobsite problem without needing adapters or a different workflow.
• Worth knowing: This is a single 3/4 inch hollow socket, so make sure that size matches your hardware before you buy.

• Will this work with an impact driver? Yes. It has a 1/4 inch hex shank designed to work directly with impact drivers and drill-drivers.
• What kind of fasteners does it fit? The 12-point socket design fits both 6-point and 12-point fasteners.
• What makes this different from a standard deep socket? The hollow shaft lets long bolts and threaded rod pass through the socket, so you can keep fastening instead of stopping when the rod bottoms out.
• What type of work is this best for? It is best suited for overhead fastening applications such as ductwork, pipe, studs, and threaded rod installations.