The 30 kg dumbbell grip kit is suitable for beginners and professionals alike. It comprises two dumbbell bars with a diameter of 30 mm. The handles are knurled to optimize grip. The cast-iron weights are fitted with several handles, to prevent them slipping out of your hands when you change discs quickly. With this set, it's possible to strengthen arms, torso and even legs during squats. It's a quality kit that lets you modulate the load to suit your needs. Key features:Practical, versatile dumbbell set for effective training at home. Material: cast iron. Color: silver, gray. 4 1.25 kg handle discs with 31 mm bore (Diameter: 15 cm - Thickness: 1.6 cm). 8 2.5 kg handle discs with 31 mm bore (Diameter: 16.9 cm - Thickness: 2.4 cm). 2 short weight bars 35 cm (2 x approx. 2.5 kg). Knurled gripping surface for optimum grip. Support surface per bar and per side 10 cm. Bar/weight bore diameter: 30/31mm. 4 star-shaped clamping screws. Disc color: gray.