... 4.low price,fast delivery 6061-T6 aluminium alloy black cube top shaft block for mass flow control instrumentpart ... housing6061-T6 Al4*4*3.5holes .42DP*.33DPASTM ,decorative black andonizeAbout our company and servicesJiangyin Yangqi Machinery Accessories Co., ... tapping machine,instrument lathe,gigsaw,boring machine,shaper,centre grinder,thread rolling machine,beam drill,universal miller.5.quality ...