★ Adjustable Dumbbell 50kg Barbell Set with Extension Shafts Iron Dumbbells Plate Hole Diameter: Approx. 25.4mm Shaft Hole Diameter: Approx. 24mm 50kg Set Contents: [Plates] 5kg x 4 [Plates] 2.5kg x 4 [Plates] 1.25kg x 6 [Plates] 0.5kg x 6 [Dumbbell Shafts] Length 34cm x 2 [Extension Shafts] x 2 [Collars] x 6 *Please note that there may be slight variations in the length, weight, and diameter measurements. Additional shipping charges apply to Hokkaido, Okinawa, and remote islands. Please contact us in the comments before purchasing, and we will adjust the price to include shipping.