Product Features:Used to indicate undersized 2" and 3.5" king pins
King Pin Diameter Detection: Place the largest detection hole of the gauge over the king pin,move the gauge to the "neck" or "shoulder" section of the king pin, rotate the gauge 360° around the kingpin to detect the diameter in all directions. When the diameter fits into the corresponding gauge slot, it indicates king pin wear
King Pin Height and Verticality Check:Place the notched ends of the gauge over the grooves of the king pin. If it does not fit, the king pin height is incorrect. Rotate the gauge 360° around the king pin to check the verticality of the king pin relative to the base plate
Material:Made of anodized aluminum alloy, laser engraved and precisely cut
Easy to use:Designed for fast inspections on the go, this tool is ideal for fleet operators, truck maintenance teams, and safety inspectors. No batteries or calibration needed—just straightforward mechanical accuracy