Our Full‑Color Hex Dumbbells adopt solid cast‑iron inner core, covered by injection‑molded TPE or TPU outer shell in bright full‑color finish, odor‑free and wear‑resistant for heavy‑duty workouts. Hex‑shaped anti‑roll heads prevent dumbbells rolling away on the floor. Vibrant full‑color shell makes weights easy to tell apart, ideal for fitness studios and commercial gyms. Three handle choices for different budget: hard chrome‑plated, zinc‑plated and stainless steel handle. Fit for both home gym and high‑traffic commercial fitness centers. Weights increase by 5 lbs per step to satisfy various strength‑training needs. Full OEM & ODM service is available. We support custom logo, customized shell colors, outer material and handle style. Wholesale orders from gym distributors are welcome.