Select strength and unsurpassed chemical resistance, with a sturdy synthetic O-ring and piston cup that hold up against the harshest chemicals, even D-limonene. Up to 40% greater output per stroke significantly reduces the number of times you pull the trigger, resulting in less fatigue. A high output with an extra large spray pattern make quick work of any job. Long lasting outer body protects piston assembly from damage during use and storage. Great for use with harsh chemicals, including D-limonene, and tough tasks like car washing, auto detailing, carpet spot cleaning and more.