Material: Designed with a detachable barbell for eases of use and storage. Includes: Eight double nuts, four 1.5Kg dumbbell pieces, four 2.0Kg dumbbell pieces, two 37cm dumbbell bars and a 41cm bar joiner. Adjustable: Weight is fully adjustable so you can increase or decrease the intensity! Stable & Safe: Double nuts ensure the weights remain secure and in place. Fitness & Gym: Get a detachable dumbbell set! | 15kg Detachable Dumbbell Set | Wowcher