This plate is specifically engineered for the HRC commercial series, known for its durability in professional landscaping. Primary Function: Provides structural support and tension for the rear wheel height adjustment system, ensuring the mower stays at the selected cutting height. Fits Models: * HRC216K2 (HXA and PDA versions) HRC216K3 (HDAH, HDPH, HXA, and PDA versions) Weight: Extremely lightweight at approximately 0.06 lbs, yet made of high-strength spring steel. Placement: Used on the rear wheels; depending on the specific assembly, it may be used on both the left and right sides.