SUPERIOR SPECIFICATIONS: The length of the olympic bar is 55 inches, compatible with all 2 34; Olympic plates. Built to the highest standard using high-quality steel materials, can withstand up to 500lbs of weight.HEAVY-DUTY CHROME STEEL: Our steel rods feature hardened nickel plating for excellent corrosion resistance and oxidation resistance.The design of needle roller bearing can rotate, with excellent stability, and it is easier to turn the wrist.NON-SLIP DIAMOND KNURLS: The DLANL Strength Training Bar 39;s knurling provides superior grip, and the knurled surface is flat and not sharp, so you don 39;t have to worry about your hands being punctured when lifting heavy weights.EXERCISE MULTI-POSITION MUSCLES: Our bench press bar is helpful for biceps, triceps, abdominal muscles, etc. You can also cooperate with the fitness bench for training, and assist in the exercise of shoulder, back and leg muscles.2 YEARS UNCONDITIONAL WARRANTY: We offer a 2-year warranty unconditionally, and we always stand by the quality of our products and offer excellent customer service you expect. Two spring rings are provided for quick weight change.REDUCING NOISE: If the noise is slightly unusual, you can apply some lubricant to the gap between the sleeve and the connecting lever. This will perfectly resolve the issue.