The Makita 424379-9 Tool Cuff Adapter, 24mm for 1" hose is a dust extractor hose adapter made for connecting compatible tools and 1 inch hoses in a dust collection setup. This is a hose adapter designed for dust extraction system connections. Model 424379-9 is a simple but important part for anyone trying to build a clean, reliable connection between a Makita tool port and a vacuum hose without cobbling together the wrong fitting.

What matters here is fit and speed. This adapter is sized at 24 mm and built for use with 1 inch hose connections, so it solves the usual problem of mismatched dust ports and hose ends. The threaded design lets it install quickly, which is exactly what you want when you are setting up or changing a dust extraction layout on the fly. Instead of a loose push-fit connection that can work itself free, this style is meant to stay engaged.

Makita calls out durable construction and high quality materials for long service life, and the available spec data lists rubber as the material. That is a practical choice for this kind of part. A little flex helps when you are routing hoses around benches, tools, and tight work areas, and it is less likely to crack from normal use than a brittle connector. For a part that does not get much attention until it fails, material quality matters more than most people think.

On the job, a good dust extraction adapter is about more than just making pieces fit. A proper connection helps maintain airflow, reduces dust leakage at the tool, and keeps the hose attached while you work. That matters whether you are collecting fine concrete dust, masonry debris, or general shop dust. If the adapter is wrong, the whole system gets annoying fast. If it is right, you stop thinking about it and get back to work.

The Makita 424379-9 Tool Cuff Adapter, 24mm for 1" hose makes the most sense for users already building out a Makita dust extraction system or replacing a worn connector in an existing hose setup. It is a good fit for contractors, remodelers, concrete and masonry users, and shop owners who need a straightforward adapter instead of a universal part that kind of works. If you know your setup needs a 24 mm cuff for a 1 inch hose, this is the clean answer.

Makita 424379-9 Tool Cuff Adapter, 24mm for 1" hose keeps a dust setup from turning into a workaround

This is the kind of small part that makes a dust extraction system work the way it should instead of almost working.

• Who it's for: Anyone building or maintaining a Makita-compatible dust hose setup that needs a 24 mm connection to a 1 inch hose.
• Why it stands out: It is purpose-built, thread-on, and made from rubber, so you get a faster install and a better everyday connection than a generic improvised fitting.
• Worth knowing: This is a specific adapter, not a universal one. Make sure your hose and tool side actually call for a 24 mm to 1 inch connection.

• What is this part used for? It is a tool cuff adapter used to connect a 24 mm dust extraction point to a 1 inch hose.
• How does it install? The adapter threads on quickly for easy installation.
• What material is it made from? The available specification data lists the material as rubber.
• Is this a power tool accessory or a standalone tool? It is an accessory for a dust extraction system, not a standalone power tool.