Fits: Column Assembly of Standard Trolley Assembly (OEM Part #001032) & Standard Dual Trolley Assembly (OEM Part #001319) Model(s) This Part Fits: LFTII & LFTII-D Notes: Service Tip: If this is your first time servicing or replacing this part, it is recommended that you download a copy of the "INSTRUCTIONS FOR THE REPLACEMENT OF GAS OR MECHANICAL SPRING" and the "RPI Exploded View of the LFII Lights". These handy work tools will assist you with your servicing or repairing of the equipment.