Safety first - the ground edges and machined center hole on the USA Sports by Troy Barbell Gray Standard 1 in. Weight Plate make them safe for both you and your floors. Sold individually in a variety of weight options, this standard-size plate is cast from grade-20 iron and coated with a resin-based paint finish, which is then baked for one hour for a finish that"s resistant to chipping, abrasion, and corrosion. About Troy Barbell: Since 1987, Troy Barbell has been developing and manufacturing free weights and fitness equipment while providing unparalleled quality, service, and satisfaction to its growing customer base. Today, the Houston-based company is one of the top free-weight manufacturers in the industry with a diverse range of products and a full commitment to use only the highest grade materials and designs. The Troy family consists of three lines: USA, leading-quality home fitness; VTX, committed to specialty and training applications; and Troy, the premium line of free-weight equipment for commercial and institutional use. Made of grade-20 iron with baked resin finish. Sold individually. Ground edges and machined center hole. Consistent quality casting. Variety of weights available. 90-day limited manufacturer"s warranty.