The 40/70 SS (Sharps Straight) with a 2.5″ case was introduced in 1876 and is one a several 40 calibre cases that different manufacturers fielded. It is identical to the 40-65 Sharps, which was a thicker walled case, that held less powder. This brass is packaged in lots of 20. Shipping weight is 272 g/20 cases.