The Stamina X 50-0085 Boulder Doorway Trainer Pull Up Bars are a set of multi-colored pull up bars designed for strength training. Manufactured by Stamina Products, these bars are compact with dimensions of 12.38 x 20.5 x 4 inches and can be easily mounted on a doorway. Perfect for gym and training activities, these pull up bars provide a sturdy and durable option for achieving your fitness goals. The brand's reputation for quality and the inclusion of a California Proposition 65 warning make these pull up bars a reliable choice for fitness enthusiasts.