(Pictured: Australia's Strongest Man; Jean-Stephen "Coco" Coraboeuf) VERVE Premium Club PU Dumbbells VERVE PU dumbbells are premium club dumbbells made of the hardest wearing polyurethane material. These dumbbells are constructed with hardened chrome, knurled handles with bold lettering for easy identification of the weight. These premium PU dumbbells are designed for commercial or semi-commercial gyms that want to have the best of the best, complete matching dumbbell range. These dumbbells are extremely durable to withstand the toughest of commercial gyms. FEATURES: Premium CPU black polyurethane construction (NOT rubber or TPU) Hardened Chrome 29mm handle Handles are welded to the ends for maximum strength and long life. The are not bolted like lower cost dumbbells which run higher risk of breaking. Knurled grips These are high grade heavy duty Polyurethane as trusted by the best health clubs for decades, which is far superior to TPU or regular rubber. CPU vs TPU What's the difference between CPU and TPU Polyurethane? Polyurethane is a super stable, compressed and fracture resistant material that outweighs many aspects to that of rubber. CPU stands for Cast Polyurethane, strong wearing, temperature resistant, high strength and has excellent wear resistance when compared to TPU; Theremoplastic Polyurethane. Many companies resort to TPU products in order to cost cut, however, VERVE does not. SPECIFICATIONS: Average Dimensions (mm) L*W*H: 300*200*200 Product Weight: as stated Handle Length (mm) 150 Knurl: Yes, Standard Shaft Finish: Hardened Chrome Shaft Diameter: 29mm Sleeve Weight Finish: Black Polyurethane Sleeve Rotation: No Rotation, Fixed