The CAP Barbell Standard Threaded Curl Bar combines the functions of a standard triceps bar and a standard curl bar. This innovative design provides two separate grip positions to intensify the isolation and increase upper arm size in both the bicep and triceps muscles. Featuring medium-depth diamond knurling for a secure grip and threaded ends with collars to secure fashion weights onto the barbell, this curl bar offers the safety and durability needed when exercising. Crafted from solid steel with a protective chrome finish for long-lasting performance. 30-day manufacturer's . Designed to accommodate weight plates with a 1-inch center hole.