Rotary Head Roller Levers: Operator Type - Limit Switch Roller Lever; Shaft Type - Non-Adjustable, Offset; Length- Radius Maximum - 1.50 in 38.1mm; Roller Type - Steel; Shaft Material - Manganese Bronze; Roller Diameter - 0.75 in 19.0mm; Roller Width - 0.50 in 12.7mm; Additional Information - Roller Thickness: 0.50 in; Manufacturer Series - EL