Will this fit my printer's Bowden fittings?

The 4.0 mm outside diameter matches standard Bowden push fittings and couplers. Check your printer's coupler spec before ordering.

Is the 2.5 mm bore right for 1.75 mm filament?

Yes. A 2.5 mm bore gives 1.75 mm filament room to move with low friction. A 2 mm bore is tighter and can bind on some filament.

One meter. Measure your filament path before cutting, and leave spare length at the ends for reseating in the couplers.

PTFE handles the heat at the hotend end of a Bowden path. Keep the tube seated in the coupler and trim frayed ends when you reinstall it.

Replace it when you see kinks, a widened or scorched bore, or inconsistent extrusion. PTFE wears with heat and use, so it is a periodic consumable.

At Infinity Flow 3D, for $4.99, as of our latest check.

Rated 5 out of 5 from 1 ratings.

$4.99at Infinity Flow 3DChecked Nov 10

Prices are checked against each store and labelled with when.

It checks today's price at every store, compares the alternatives and answers in about a minute.