Description Overview Six K. Mayer HDR series industrial machines available. Specifications Code no. 090-01-09: type HDR 10, width 170", gauge 6 E. Code no. 09-03-08/1: type HDR 14 St, width 25", gauge 12/18 E. Code no. 09-03-08/2: type HDR 14, width 25", gauge 12 E. Code no. 09-03-08/3: type HDR 14 EEW-St, width 75", gauge 14 E. Code no. 201-01-10/1: type HDR 10 EH St, width 78", gauge 12 E. Code no. 201-01-10/2: type HDR 10 EH St, width 78", gauge 18 E.