Heavy Duty High Pressure Grease Gun, 7500 psi, 1 8 in NPT(F), Nozzle Coupler no checkout weed killers and pesticides Adjustable brass weed killers and pesticides Adjustable brass nozzle Ergonomic handle for easy pumping and carrying Added carbon layer helps filter out nuisance levels of ozone and organic vapors (less than OSHA PEL) Dura Mesh® shell resists collapsing in heat and humidity Exhalation valve and guard bracket provide durability and longevity Unique precision control inlet check valve provides ease of handle operation even with increase in pressure Knurled handle for positive grip Handy trigger guard prevents pinching Reversible inlet check seat and hydraulic jaws provide double life