New 1820 siamet PSA discs for metal applications are designed for the surface treatment of ferrous and non-ferrous metals, smooth grinding of light weld seams and the removal of weld spatter, rust, scale and contamination. The discs are designed with an aggressive mix of zirconia and semi-friable aluminum oxide grains, plus a heavy and durable f-weight paper backing. They’re available as stocked items in 5- and 6-inch discs with no holes, and a grit range of 40g to 150g. Other sizes and dust-extraction hole patterns are available upon special request. The 1820 siamet disc is a product adaptation of the existing 1815 siamet Hook N’ Loop disc, but focuses on customers who prefer a PSA backing for DA and rotary sanders.