The hex-head design on the VTX by Troy Barbell Vinyl Dumbbell prevents rolling and is easy to stack. Plus, the vinyl covering won't rust, crack, or fade with everyday use, and it's sold individually in your choice of weight. Suitable for home or commercial use. One-year manufacturer's warranty against breakage does not include vinyl casing. Dimensions:1-pound: 4.73L inches 2-pound: 5.44L inches 3-pound: 5.99L inches 4-pound: 6.46L inches 5-pound: 6.78L inches 6-pound: 7.05L inches 7-pound: 7.68L inches 8-pound: 7.88L inches 9-pound: 8.19L inches 10-pound: 8.35L inches 12-pound: 8.66L inches 15-pound: 9.26L inches 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. Iron construction with vinyl coating. Sold individually. Hex-head design prevents rolling. Crack-, rust-, and fade-resistant. Variety of weights available. 1-year manufacturer's warranty against breakage.