The 3 in 1 Tri Grip Dumbbell Weight Bundle features tri grip cast iron weight plates, which provide different gripping options when you want to exercise with the plates alone. This dumbbell pack also allows you to choose the weight simply by adding or removing the weight discs, giving you the option to exercise with 5kg, 7.5kg or 10kg (not including the weight of the bars) on each dumbbell. It's great feature when you begin to increase the weight as you make progress. What's included: 4x Cast Iron Olympic Weight Discs | 2.5kg 8x Cast Iron Olympic Weight Discs | 1.25kg 1 Pair of Olympic Dumbbell Bars | (5.85kg) 2 Pairs of Spring Collars | 50mm Dumbbell Bar Specs Weight: 5.85kg Total Length: 50cm Sleeve length: 15.5cm Grip Length: 15cm