Curved inner surface fits around you. All sizes use the same inside radius. All corners and edges are round. Belt webbing is recessed into the weight, front and back. Heavy-duty gear for a lifetime of use Antimony alloy resists deforming. Six times harder than plain lead. Wide belt slots and strong, thick cross-section prevents the clamping of weights onto your belt when dropped. 

Features:

• Weight belt webbing weaves thru the weight
• Die cast on location at Sea Pearls
• Hardened with antimony to prevent deforming
• Rounded and contoured for comfort
• Great for use with nylon or rubber weight belts.