The Eagle Pro ESA series is conveniently lightweight and easy to carry. The high strength aluminum alloy is treated to increase resistance to wear and corrosion. Heavy-duty, straight pull return springs provide quick reaction times. Composite bearings prevent metal-to-metal contact, and protects against side loads. The Rugged, EAB-201A female coupler with dust cover included provides a shield against dust and debris. The Eagle Pro ESA series complies with ASME B30.1 standards.