Eco spacers

Lead-free free-cut brass rod (technical standard of Japan Copper and Brass Association)
Lead-free free-cut brass rod : Copper alloy rods with machinability improved by adding bismuth (0.5-4.0%) to an alloy of zinc with copper as a main component and lead being 0.1% or less.
Eco spacer :
Bismuth-based lead-free free-cut brass rod:BZ5
(made by San-Etsu Metals Co., Ltd.)
product name
: BZ5:As eco spacer: "BZ" stamp on product