The Bicep Tricep machine model # GCBT380 builds bulging biceps and triceps. It features an intelligent dual-function design. You can raise or lower the adjustable seat for proper positioning. There is an over-stuffed support pad to rest your arms on. The arm par on the bicep tricep machine is positioned at a 30° angle for precise biomechanical movement. It features a combination of 2" x 2" and 2" x 4" supportive steel that blends structural integrity with comfort. Adjusting the bench is easy using the jumbo pop pin to lower the lifting arm and grab hold of the rotating v-bar handle to blast out a burning set of arm curls. Now adjust the lifting arm upward and lock it in for an exhilarating triceps workout. The bicep tricep machine comes standard with a 1" dia weight post .