I bought this one about 2 years ago, and it's been great. Highly recommend it. Have used it with kettle bells up to 24kg so far.

https://www.amazon.com/Harbinger-Polypropylene-30-Inch-Steel-Chain/dp/B001P0S3XU/ref=sr_1_1?s=sporting-goods&ie=UTF8&qid=1492870413&sr=1-1&keywords=harbinger+dip+belt