The Gorilla Sports range of muscle bars has been developed for athletes who want to take their sport to the next level. Made from high-quality aluminum, the musclets are ideal for strengthening fingers, hands and arms, as well as other parts of the body, by increasing resistance. Muscles are ideal for developing arms and forearms. Extremely sturdy, they provide a secure grip. Main features:Musclet 100 lbs = 45 kg for beginners, young athletes and warm-ups. Heavyweight musclet 150 lbs = 67.95 kg. Intermediate musclet 200 lbs = 90 kg. Upper body 250 lbs = 113 kg. Professional musclet 300 lbs = 135 kg. Heavyweight musklet 350 lbs = 158 kg. High-quality knurled aluminium handle - with resistance information. Ideal for climbers, martial artists, athletes and other hand exercisers. Special steel pressure spring. Handle diameter: 18 mm. Musclet dimensions: L 13 x W 10 cm.