This equipment features cement filled models, which have been a standard in the lifting community for years. They come in pairs of 10 lb, 15 lb, and 25 lb plates you can add or remove from the ends of the bar, or combine for a more difficult workout. This all-inclusive, in total 100 lbs weight set provides you with a tubular steel 1' 2-piece bar, a pair of collars, and the three sets of balanced weights. The collars keep the loose components from sliding. This 100 lb weight set is designed for a full body workout. Use it for arms, chest, back and legs. The Gold's Gym Vinyl Weight Set is the ideal solution for a beginner or an experienced lifter.