5/10Pcs Universal Swivel Ball Wheel Eye Wheels Round Robot Machine Trolley Hardware Ball Rotating Sliding Labor Saving ToolsFeature: Because of the flexible winding of the universal ball, objects such as the workboard and material box acting on it can move very flexibly, which greatly reduces the labor intensity of workers. The distribution density of the universal ball can be set freely according to different bearing requirements. Application: all kinds of universal balls are suitable for electronics, hardware, machinery, chemical industry, food, forests, mining, books, supermarkets, rubber and other industries. Widely used in conveying systems, feeding systems, processing systems, processing machinery and packaging machinery of auxiliary equipment. Specification:Material: Carbon Steel & ZincDimension:Aperture: About 4mm/0.16inHole Distance: About 38mm/1.5inBall Diameter: About 16mm/0.63inHeight: About 21mm/0.83inDimension: About 48x32x2 1mm/1.9x1.3x0.83inNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Please allow 1-2cm measuring deviation due to manual measurement.5/10 x Wheel Ball Wheel