As a ready-made system with a tube made of aluminum, carbon, stainless steel or PVC, the ball bearings have proven their worth as guide rollers for deflecting foils and labels or for conveying goods. By using wear-resistant high-performance polymers and thin-walled tubes, they save up to 48% in weight compared to metallic solutions. Their mass inertia is 42% lower, the energy required for acceleration is therefore considerably less and the rollers reach the conveying speed sooner.