Round brush 150x25.4mm. Head diameter: about 150mm; Bore diameter: 25.4mm. The cutter head has strong versatility and is suitable for 99% of the straight shaft scrapers on the market. GREAT GARDEN TOOLS: This mower head uses stranded wire and is designed for gardening. Bricks, pavers and walkways to make your garden cleaner and more beautiful. Versatile: This round wire brush can also be used as a cleaning and polishing tool for deburring, cleaning welds, rust removal, dusting and removal (perfect finish. For deep work we recommend a soft grass brush ). EASY INSTALLATION: Comes with 1 set of installation tools: Platen, End Plate, Lock Nut, Screwdriver. Easy to install, just place our brushcutter head on top screw of straight corrugator and secure with washer and nut. Excellent rotational balance reduces user fatigue and increases service life. NOTE: You must wear protective gear before using the brushcutter. (face protection, hearing protection, sturdy clothing, high boots and gloves)