When on sale (as these now are until 9/2), we have been buying this exact set for years in some quantity. It even comes with two adapters for small shaft grinders that we never use, but have given many away.
Personally, I like the knotted over the crimped for longevity with rough surfaces and use the crimped for more fine work. The thin ones I use on inside corners of angle iron, I beams, etc., to save the cup models for the flats. The handheld wire brush is a bit short handled for me, but works for cleaning up for welds or general usage.
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