The Festool DC-D 36/27-AS reducing sleeve is a vacuum accessory made to adapt larger Festool dust extraction hoses to tools with a smaller 27 mm dust port. This is a reducing sleeve designed for dust extraction hose adaptation. Model Number 768135. If you run Festool extractors and switch between tools with different port sizes, this small adapter solves that connection problem cleanly.

What it does is simple but important. The sleeve reduces from 36 mm to 27 mm and can also be used with a D32 hose, allowing you to connect either D36 or D32 hose setups to a Festool tool with a 27 mm dust port. That matters because a solid hose-to-tool connection is what keeps dust collection working the way it should. A loose or improvised fit means reduced suction at the tool, more cleanup, and more airborne dust where you do not want it.

Festool built this as a direct tool connection end, not a universal adapter that kind of works. It is made to insert into the end of a D36 or D32 hose, so setup stays fast and predictable. For anyone already invested in Festool CT dust extractors, that kind of plug-in fit is the difference between a clean system and a pile of mismatched accessories.

This part is best understood as a workflow accessory. It is not flashy, but it keeps a dust extraction system more usable across multiple tools. If one tool takes a 27 mm connection and your hose is larger, this adapter bridges that gap without forcing you to swap hoses every time you change tasks. On trim work, sanding, cleanup, and shop use, that saves time and keeps dust collection consistent.

The compatibility side is where this sleeve earns its keep. It is listed as suitable for all Festool CT systems and is intended for use with Festool D36 or D32 hoses. If your setup already revolves around Festool dust extractors and hoses, this is the correct kind of accessory to keep everything talking to each other without guesswork.

Who should buy it? Festool users who already own CT extractors and need to connect a larger hose to a smaller 27 mm tool port. It makes the most sense for woodworkers, remodelers, finish carpenters, and shop users who care about clean dust collection and want the right adapter instead of an improvised fit.

Festool DC-D 36/27-AS Reducing Sleeve That Solves a Real Shop Problem

The Festool DC-D 36/27-AS reducing sleeve is the kind of small accessory that makes a dust extraction setup way less annoying to live with.

• Who it's for: Festool users running CT extractors with D36 or D32 hoses who need to connect to tools with a 27 mm dust port.
• Why it stands out: It is purpose-built for the Festool system, installs directly into the hose end, and fixes a common hose-size mismatch without a homemade adapter.
• Worth knowing: This is a dedicated hose adapter, not a universal fitting kit. If your setup is already Festool-based, that is actually the good news.

• What does this adapter do? It reduces a Festool hose connection from 36 mm to 27 mm so a D36 or D32 hose can connect to a Festool tool with a 27 mm dust port.
• Which hoses does it work with? It can be attached by inserting into the end of Festool D36 or D32 hoses.
• Is it compatible with Festool CT extractors? Yes. It is listed as suitable for all Festool CT systems.
• What type of product is this? It is a reducing sleeve, also described as a vacuum accessory or hose adapter for dust extraction.