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. Available 5-50, 55-75 or 80-100 lb. sets. Dumbbell Rack Optional SDRS550 set includes (2) 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 lb. Hex Dumbbells. SDRS650 set includes (2) 55, 60, 65, 70, and 75 lb. Hex Dumbbells. SDRS900 set includes (2) 80, 85, 90, 95 & 100 lb. Hex Dumbbells. Shipping This product ships via freight company, and will be delivered curbside with a scheduled delivery appointment. Lead Time In-stock and typically ships within 2-5 business days.