Alumina ceramics bushing&ceramic structure part Industry ceramic Wear resistance High ... plunger, beam, roller, shaft, screw, washer, sleeve, hunger, spacer, holder, carrier, insulator, scissors, knife, slitter, tweezers, tools, fixture, clamp, chuck, nozzle ... 01Roundness0.005Straightness 0.005Parallelism0.01Planeness0.005Roughness 0.05Fit clearance0.005 Alumina ceramics bushing&ceramic structure part