Patent pending SDS 'Secure Dumbbell System' combines one-piece cast heads with steel inserts, pinned, press fitted, and welded. Their compact design makes them shorter in length and easier to handle than conventional dumbbells. Durable rubber coating prevents damage to floors and equipment. Features Dimensions Hexagonal shape prevents rolling Encased in virgin rubber SDRS550 set includes (2 each): 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 lb. SDRS650 set includes (2 each): 55, 60, 65, 70, and 75 lb (Sold Separately) SDRS900 set includes (2 each): 80, 85, 90, 95 and 100 lb (Sold Separately) SDRSHEAVY set includes (2 each): 105, 110, 115 and 120 lb (Sold Separately) Dumbbell Rack Sold Separately Weight: 550lbs, 650lbs, 900lbs, 900lbs SDRS550 set includes (2 each): 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 lb. SDRS650 set includes (2 each): 55, 60, 65, 70, and 75 lb SDRS900 set includes (2 each): 80, 85, 90, 95 and 100 lb SDRSHEAVY set includes (2 each): 105, 110, 115 and 120 lb
