Detailed features:Practical, versatile dumbbell set for effective home training. Materials: steel, cast iron, rubber. 4 x 1.25 kg discs with 31 mm bore (Diameter: 14.5 cm - Thickness: 2.5 cm). 8 x 2.5 kg discs with 31 mm bore (Diameter: 19 cm - Thickness: 2.5 cm). 2 x short weight bars 35 cm (2 x approx. 2.5 kg). Knurled gripping surface for optimum grip. Support surface per bar and side 10 cm. Bar/weight bore diameters: 30/31mm. 4 star-shaped clamping screws. Disc color: black. Rubber dumbbell set The 20kg rubber dumbbell set is suitable for beginners and professionals alike. The set enables you to perform a wide variety of exercises. It comprises two dumbbell bars with a diameter of 30 mm. The handles are knurled to optimize grip. With this set, you can strengthen your arms, torso and even your legs when you do squats. The rubber coating on the discs and their rounded edges ensure a smooth installation on the floor and limit noise during installation.