Twin-Line Tap Head M10 × 1.25 Left-Hand

What it is

A twin-line, tap-feed trimmer head from three foxes with an M10 × 1.25 left-hand thread — the gearbox fitting used on many petrol brush cutters and multi-tools. It comes pre-loaded with 4 m of 2.4 mm line and cuts up to 30 cm. This page’s address mentions metal eyelets, but the listing doesn’t; the body and line are nylon. When we checked in October 2026 it showed as unavailable.

Will it fit?

The thread is everything. Many brush cutters use M10 × 1.25 left-hand (the head tightens anticlockwise relative to normal threads, because the head spins anticlockwise viewed from above); others use M8, M12 or right-hand threads, often with an adaptor. Check your manual or the old head before ordering. Line size matters too: 2.4 mm suits most mid-size petrol machines but is too heavy for small trimmers — see our line size guide.

Using a tap head

Run at full throttle and tap the head lightly on the ground to release line. When the spool is empty, rewind it with fresh line (how to thread brush cutter line). If the line wears through at the exit holes quickly, the eyelets are worn — replace the head or the eyelets.

Alternatives

An original head from your machine’s maker usually lasts longer; options including quick-load designs are compared in the best brush cutter heads, such as the Oregon Speed-Load head.