Front Pin Heavy-duty Square JackFront Pin Square JacksFeatures a spring return drop leg that will lift 10,000 lb. Easy retraction and expansion with the spring return mechanism. Strong, durable 4 in. square construction will handle up to 10,000 lb (dynamic) and 12,000 lb (static). Use in pairs for even heavier duty applications. Corrosion resistant black powder coated finish. Can be ordered with or without handle.