-. Binding : Office Product
-. Brand : Aftermarket
-. Color : Black and Red
-. Feature : Black and Red Nylon / 2" Spool / 1/2" Ribbon / Compatible / Swartz Ink sells the Olivetti brand ribbon for these typewriters, which has the larger hole to allow for the nut to screw onto the spindle.
-. Label : Underwood
-. Manufacturer : Underwood
-. Model : LYSB00BDAPUTW-ELECTRNCS
-. MPN : UND-1656-A
-. PackageQuantity : 1
-. PartNumber : UND-1656-A
-. ProductGroup : Office Product
-. ProductTypeName : INK_OR_TONER
-. Publisher : Underwood
-. Studio : Underwood
-. Title : Underwood 310, 315, 319 and 378 Typewriter Ribbon, Black and Red, Compatible, Twin Spool