What special in Ballsum Mold Parts Diameter 0.5mm balls can be applied Linear precision guide sets with ball slider Usually being applied in a optical scale touch sensor , optical molds... Super Metrix arranged ball retainer Usually being applied in optical molds Double spiral ball retainer Stable, durable and easier to install Fit all kinds of press mold High presion guide sets Oilless guide system Tolerance of inner and outter diameter +/- 0.001mm Roughness Ra 0.08 QC report provide if requested
