JLG Parts, Pothole Protection Plunger Limit Switch for use on various JLG ES and select R MEWP (Mobile Elevated Work Platform) scissor lift machines with pothole protection installed. Limit switch includes plunger roller, switch, and four prong connection plug. Model use: 1230ES, 1930ES, 2030ES, 2032ES, 2630ES, 2632ES, 2646ES, 3246ES, R6, and R10. Please ensure proper assembly and serial range for parts purchase.