Description Item 001 Zinser ringframes model 421E Year 1991 408 spindles each Ring diameter 48mm (1.9 in) Gauge 75mm (3.0 in) PK1601 drafting Automatic doffing Quantity: 6 Item 002 Zinser ringframes model 421E Year 1993 520 spindles each Ring diameter 48mm (1.9 in) Gauge 75mm (3.0 in) PK1601 drafting Automatic doffing Quantity: 6