The Cup brush is manufactured from high-grade stainless steel wire. This wire brush is ideal for light/medium duty applications where more substantial brushes would cause wire breakage. It is used to remove rust and grime from barbecues, paint from garage doors, paint from bricks and gutters, and remove rust from trailers. The wire cup crimps into a tight fixed position providing a good mechanical bond with the base material. Please note that this is not to be used on stainless steel or aluminium as they may cause rust contamination. Ideal for light/medium duty applications| Removes rust and grimes| Durable and compact