Strengthen your arms with these adjustable dumbbell handles by JFIT, made of strong, unbreakable steel with a rust-resistant finish for all your weightlifting needs. Our dumbbell bars feature 5 inches of medium-depth diamond knurling for a firm, secure grip that prevents your hands from slipping even when sweaty and reduces strain when lifting the heaviest loads. Each dumbbell handle set comes with 4-star lock collars that will keep weight plates secure, and is designed for standard 1” plates, allowing you to add or remove weights quickly and conveniently. Our high-quality weightlifting accessories are designed for professionals and novice weightlifters, making them great for men and women to use in personal home gyms or in commercial fitness clubs.