Build grip, upper body and core strength with the SPRCUA Multi-Chin Cross Member. The SPRCUA attaches easily to the Body-Solid GPR400 Power Rack and allows users to create unique muscle isolations with multiple grips for chin-up and pull-up movements. The SPRCUA fits comfortable in the middle of the GPR400 Power Rack adding increased workout versatility without requiring additional space around the rack. Each bar of the SPRCUA features grip-textured, non-slip paint for safe, comfortable and effective workouts.