Limit Switch Rotary Head Roller Levers: Operator Type - Limit Switch Roller Lever; Shaft Type - Non-Adjustable, Straight; Roller Mounting - Front Mount; Length- Radius Maximum - 1.5" (38.1mm); Roller Type - Nylon; Shaft Material - Stainless Steel; Roller Diameter - 0.75" (19.0mm); Roller Width - '0.25" (6.35mm)