WEIGHT DISTRIBUTION KIT: REESE Pro Round Bar Weight Distribution Hitch with Sway Control is designed to evenly distribute weight and reduce trailer sway for improved stability, ride control, and security. SYSTEM INCLUDES: Head with preinstalled 2-5/16-inch hitch ball, tapered spring bars, 8.5-inch-deep drop shank, control brackets, lift-assist bar, and all hardware necessary for an easy install. DURABLE CONSTRUCTION: High strength steel head and welded hitch bar provide superior durability. SUPERIOR RIDE COMFORT: Tapered spring bars provide constant weight distribution over the axles for superior ride comfort. TRAILER FRAME FIT: No-drill, clamp on brackets fit up to 7-inch trailer frames for an essential RV accessories and camper accessories must have.