Pelton & Crane LFII Track/Ceiling Mount Light Arm Spring Kit Kit Includes: Track/Ceiling Mount Light Spring Assembly; DCI PN 2734 (P&C #1532907) Rear Knuckle Support; DCI PN 9584 (P&C # 015806) Front Knuckle; DCI PN 9572 (P&C #4191222) Pivot Pin; DCI PN 9570 (P&C #3322604)