"R" Option refers to Fermats V-axis movable RAM. A WFT13-R machine is equipped with a standard boring mill live spindle with W-axis stroke of 730 mm (28.7 in.) and ram V-axis stroke of 700 mm (27.5 in). The W-Axis is equipped with a Fagor or Heidenhain linear scales that ensures long-term accuracy of spindle positioning. The headstock provides an adjustable mounting platform for a variety of attachments such as angle heads, support spindle sleeves, facing heads, etc.