Classic Series 50/55LB Adjustable Dumbbell Pair Set of 2 OR Single Unit (Check qty before purchase), 5-in-1 OR 15-in-1 Patented Secure System, Solid Cast Iron Core, Iconic 12-Sided Polygonal Anti-Roll Base, Professional Heavy Weight for Men

Color: Classic Black Item Weight: 50 pounds Material: Cast Iron Special Feature: Adjustable Weight, No-Roll Head, Rust Resistant, Sweat Resistant, Unbreakable - DURABLE CAST IRON CORE: Classic Series uses a high-density, nylon-coated cast iron core for a compact, professional feel that handles years of high-intensity training. Buy one set, use longer. Best Value Dumbbell Set for Home and Garage Gym. - STABLE 12-SIDED POLYGONAL BASE: Our signature 12-sided plates provide a stationary, rock-solid foundation for floor-based movements like renegade rows and push-ups. Steady and Safe. - ADJUSTABLE LENGTH: Unlike fixed-length dumbbells that stay bulky, this unit physically shortens from 14.17" to 6.65" as you drop weight, ensuring a natural range of motion without the gear hitting your body. - 1-SECOND QUICK WEIGHT SELECT: Stop wasting time between sets; the intuitive pull-pin mechanism allows for lightning-fast transitions between 10, 20, 30, 40, and 50 lbs to keep your heart rate and momentum high. - PRO-GRADE LOCKING SECURITY: Train with absolute confidence using our patented safety dovetail mechanism that keeps the plates tightly fit and silent, delivering a secure, rattle-free lift even during explosive movements.