This is a Winchester Ammunition Brass Enclosed Base known as the Spr Cln chambered in 9MM, model WC92.
Since 1922" Super-X ammunition has provided exceptional quality and outstanding performance for all types of hunters and shooters who rely on its time-proven dependability backed by legendary excellence.
Features:
9MM
1,130 Feet per second
124 Grain Winclean
50 Rounds per box