Hex Dumbbell Set: Ready to take your body to the ultimate level of muscularity? Nothing will do it faster, easier and more efficiently than these sets of hex dumbbells. Cut your workout time in half while maximizing muscle growth. Heads are cast completely around and through two high carbon Roll Pins permanently embedded in the steel haandles. No matter how much they're abused, they won't break. Specially designed hexagonal shape prevents rolling and assures safer workouts. Raised silver numbers for easy readability and quick selection. All edges and corners are ground smooth for safe handling. SDS650 set includes (2 each): 55, 60, 65, 70, and 75 lb.