New MTN Gearsmith Heavy Duty Adjustable Cast Iron Chrome Weight Dumbbell Set Dumbbells 52.5 100 105 200 lbs (Black-Painted, 100 LB) High Quality Cast Iron Adjustable Weight Dumbbell Chrome Collars and Handles are Threaded for a Secure Fit This is a Single Piece of 100lbs Adjustable Dumbbell not a Pair Including 8x10lbs, 2x5lbs,2x2.5lbs Weight Plates, One Chrome Handles and Two Star Spin Lock Collars