Get a secure fit (and peace of mind) with the USA Sports by Troy Barbell Olympic Spring Collars. Sold in a set of two, these spring collars hold Olympic plates to all two-inch bars. They"re made of commercial-grade steel complete with comfy rubber grips. 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. Commercial-quality steel construction. Set of 2 Olympic spring collars. Comfortable rubber grips. Securely holds Olympic plates to all 2-inch bars. Dimensions: 5.39L inches. 90-day limited manufacturer"s warranty.