Description Overview Each unit consists of two machines: an Sb-851 and an Rsb-851. Both machines have a 20 in x 48 in can size. Both machines feature automatic can change and power creel. The Rsb-851 includes an autoleveler. Specifications Sb-851: 20 in x 48 in can size, automatic can change, power creel. Rsb-851: 20 in x 48 in can size, autoleveler, automatic can change, power creel. Quantity Four units available.