Weigh Safe Drop Hitch With Built-In Scale 2.5 Shank Here it is - the Weigh Safe Drop Hitch, a unique trailer hitch embedded with a scale for optimal tongue weight calculation. This feature dramatically improves tow safety and delivers an enjoyable towing experience all the while mitigating the risk of wheel, suspension, and drivetrain damage, affecting both the tow vehicle and the trailer. Measuring tongue weight has never been easier, thanks to Weigh Safe's scale. The procedure is straightforward - couple the trailer to the ball mount, exactly like any other mount. The downward pressure of the trailer's weight on the hitch ball triggers an internal hydraulic piston. This force on the oil reservoir subsequently transfers as a reading on the hitch's built-in scale. The scale exhibits impressive accuracy, with a variance of just 1.25 +/- (50lb +/-), providing reliable measurements across the entire weight range. Specifications: 2.5 Receiver size (shank) Max gross trailer weight (all models): 8000 lbs with 2 ball 18,500 lbs with 2-5/16 ball Max tongue weight (all models): 2200 lbs V5 & J684 certified Drop hitch adjustment:1 increments Ball material: S tainless steel Pin:Dual pin with key lock assembly (included) Rise:All hitches may be used in rise position Gain 1 inch (e.g., 4 drops are 5 rises) Total Height:Add 3 inches (e.g., 4 drops measure 7 from the top of the receiver to the hitch base) Includes: Drawbar Slider with built-in scale 2 Tow ball (stainless steel) 2-5/16 Tow ball (stainless steel) Ball retaining pin (1) Lock plate key assembly Dust lock cover Barrel style keys (2) Optional locking hitch pin Part # Ws05 (keyed to match locking plate select models) Features: Premium drop hitch with integrated tongue weight scale 6061 T6 billet aluminum shank and mounting platform provide superior strength and durability Solid block construction provides greater strength than hollow steel competitors Rustproof Lighter than steel Accuracy of 1.25 +/- (50lb +/-) over the full weight range of scale