Genuine Fein carbon (motor) brush, part number 30711158000 — a direct replacement carbon/commutator brush for Fein angle grinders. Sold as a Single Brush

The carbon block measures roughly 5 × 10 × 17 mm (length × width × thickness), designed to fit the brush holder profile used in many Fein grinders.

Typical fit examples: Fein WSG 11‑125 and WSG 15‑125 grinders. The same brush style is also listed for a range of other Fein WSG-series grinders and related model codes — check your grinder’s brush shape and holder before ordering if you have a different WSG variant.

If your grinder shows heavy sparking, loss of power, or intermittent running, replacing the worn brush with this original Fein brush (30711158000) will restore proper contact with the commutator and help return the motor to smooth operation.