AERO Specialties patented SiPsHitch linear force monitoring system alerts tow tractor operators to potential overstress situations before they cause shear pin breakage or nose gear damage. SiPsHitch affords never-before-seen levels of protection in towbar push-pull operations. Affordable and easily installed, SiPsHitch can be retrofitted to all existing towbar-style tractors as well as new tractors.