HoistFitness F-550 is a seated preacher curl machine designed for commercial or home use. It features a wraped pad for added comfort and support, and an 8 x 15 pad for bicep isolation exercises. The machine also includes a pull pin for quick and easy adjustments, and a variety of end caps and flat washers for added stability and durability. With its sturdy construction and comfortable design, the HoistFitness F-550 is a great choice for anyone looking to add a preacher curl machine to their home or commercial gym.