Ingco Wire Cup Brush 125mm WB11251, 0.35mm Wire, M14x2 Thread

Our review

This is a 125mm wire cup brush from Ingco, listed as model WB11251. It uses 0.35mm wire and an M14x2 threaded arbor, and it is rated for a maximum rotation of 6500 rpm. That combination points to a cup brush meant for a standard angle grinder, the kind of tool used to strip rust, scale, paint or light weld spatter from flat steel, and to roughen surfaces before painting. It suits a workshop or farm user who already owns a grinder with an M14 spindle and wants a consumable for cleaning metal rather than a finishing tool.
Before buying, check two things. First, confirm your grinder's spindle thread is M14x2, since that is what this brush mounts on; a different thread will not fit. Second, check your grinder's no-load speed against the 6500 rpm limit. A grinder that spins faster than the brush is rated for is not a safe match, so match the tool to the rating rather than the other way round. Also think about wire thickness: 0.35mm is on the finer side, so it will be gentler on the surface and better for lighter rust and paint than for heavy scale.
Compared with other cup brushes of this size, the main differences to weigh are wire diameter, thread type and the rpm rating. A coarser wire removes more material but leaves a rougher finish and sheds wire more aggressively. Cup brushes like this are also available in knotted or crimped styles, which behave differently on hard edges. If your work is mostly flat plate and moderate rust, this specification is a reasonable starting point. It is available on Sokonia.