Replacement carbon brushes (cooling carbon brushes) from Bosch, part number 1607014171, designed for large 230 mm angle grinders. Compatible with Bosch models PWS1900 and GWS 180/230. Made from high-quality composite graphite (carbon) for reliable conductivity and wear resistance. Their purpose is to serve as OEM replacement carbon brushes to restore motor contact and performance. Supplied in a small package for professional and DIY use.