Keep your chin up and your arm muscles strong with the Triple Station Inclined Chin-Up Bars. This piece of fitness equipment works the latissimus dorsi muscle, which is important in extending the arm. It also works at strengthening the biceps, which are important muscles in lifting things. The design of these chin-up bars are three separate chin-up bars that are each at a different level, making them inclined. This inclination of the bars means that people of all heights and sizes are able to use this piece of fitness equipment. The frames of the beams are made out of galvanized steel tubes, and it comes with stainless steel hardware. It is manufactured to have no sharp edges. The Triple Station Inclined Chin-Up Bars have a tough powder coated finish that gives it maximum durability. This allows for many years of long-lasting outdoor use. It is designed to be used by people 13 years of age and older.