These green glass claret bottles are the same as item # 5230B except that these bottles have a threaded top which allows for a screw cap to be used. We recommend using either the 28mm metal screw caps or poly seal screw caps (not included) on these bottles. 12 bottles per case. 750 ml green glass claret bottles, screw top, country of origin - United States, manufacturer name - Midwest home brewing and winemaking supplies.