Overview Reviews Product Description ST-510 Polypropylene Gun Excellent for use in soft wash applications SPECIFICATIONS: 18.5 GPM maximum 365 PSI maximum 1/2" FPT inlet and outlet Stainless steel spring 320°F Max Product Videos Custom Field Product Reviews Write a Review Write a Review × UDOR POLYPROPYLENE GUN ST-510 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *