AOOSEDOO PTFE Hose Assembly Tool Kit — 4AN-10AN Reaming & Double-Ended AN Wrench, Blue

AOOSEDOO PTFE Hose Assembly Tool Kit is a compact reaming and separation tool plus a double-ended AN fittings wrench designed to make 4AN–10AN PTFE fuel line assembly faster, cleaner, and more reliable.

Installing PTFE fuel lines can be fiddly: the braided outer, PTFE liner and olive must align precisely for a leak-free connection. This AOOSEDOO kit provides an exchangeable plug reamer that reshapes and separates the hose layers, and a dual-jaw AN wrench that grips both socket nuts and B-nuts so you can tighten fittings without slipping. The tools are built to streamline assembly for common AN sizes and reduce trial-and-error when preparing PTFE hoses.

How does the reaming tool improve PTFE hose preparation?

The included reamer inserts into the hose to reshape the PTFE liner and clear a smooth, round opening for the olive. It simultaneously separates the braided stainless layer from the inner PTFE tube so the olive seats correctly without bulging or misalignment.

• Exchangeable plugs fit multiple AN sizes to match 4AN–10AN hoses.
• Reshapes cuts to a circular profile for easier ferrule insertion.
• Separates braid and liner quickly compared to pins or picks.

What does the double-ended AN wrench do that a normal wrench doesn’t?

The double-ended wrench has two purpose-built jaws: one sized to grip 6AN style socket nuts and the other to hold 8AN B-nuts. That lets you hold one fitting while turning the other, preventing twisting of the hose and ensuring a secure, even connection.

• 6AN jaw (approx. 0.79 in) for socket-nut engagement.
• 8AN jaw (approx. 0.9 in) for B-nut locking.
• Compact shape fits tight engine-bay spaces where standard tools struggle.

Which AN sizes and hose types work with this kit?

The AOOSEDOO tool set is made to be compatible with popular PTFE hose assemblies from 4AN through 10AN. The removable plug system lets one tool adapt to multiple AN dimensions, so you don’t need a separate reamer for every hose diameter.

• Suitable for 4AN, 6AN, 8AN, and 10AN PTFE hose fittings.
• Exchangeable plug design expands fitment across sizes.
• Best results when used with PTFE fittings and hoses made to common AN specs.

How do these tools speed up assembly and improve reliability?

By quickly producing a round, consistent liner opening and separating the braid from the liner, the reamer reduces the time spent wrestling ferrules into place. The AN wrench lets you hold one component steady while tightening the other, preventing misalignment and reducing the need for rework.

• Cut assembly time by streamlining liner preparation and ferrule insertion.
• Reduce damaged or crooked ferrules by ensuring correct liner positioning.
• Minimize slippage and cross-threading during final tightening with the double-ended wrench.

Who is this for: mechanics, fabricators and automotive enthusiasts who build or service PTFE fuel, oil or coolant lines and want a small set of purpose-built tools to make fittings faster and more consistent. This kit suits hobbyists working on racecars or street vehicles, garage professionals installing aftermarket hoses, and anyone seeking a straightforward way to improve PTFE hose assembly quality.