Alumina ceramics bushing&ceramic structure part Industry ceramic Wear resistance High ... , clamp, chuck, nozzle, guide, frame, lining, and grinding media, milling ball or beads.These precision toleranced ceramic components or assemblies are ... .01Roundness0.005Straightness 0.005Parallelism0.01Planeness0.005Roughness 0.05Fit clearance0.005 Alumina ceramics bushing&ceramic structure part