Quality Fasteners
https://www.holo-krome.com/uploads/7/2/7/5/72754089/hk.usa.shcs.alloy.bo.pdf
Norton Benchstones;
Product # IB6 Part # 61463685560
https://www.nortonabrasives.com/sites/sga.na.com/files/document/catalog-nortonindustrial-7362-lr-bookmarked.pdf#page=66
https://www.holo-krome.com/uploads/7/2/7/5/72754089/hk.usa.shcs.alloy.bo.pdf
Norton Benchstones;
Product # IB6 Part # 61463685560
https://www.nortonabrasives.com/sites/sga.na.com/files/document/catalog-nortonindustrial-7362-lr-bookmarked.pdf#page=66