Field King 190350 Backpack Sprayer for Weed Control High pressure external style piston pump Durable, 21 inch poly wand with the highest quality Viton seals for chemical resistance. Premium, lockable shut off with brass components and an in-line filter. Built-in carry handle with wand storage and a harness with adjustable padded straps, waist belt and chest cinch strap. 4 nozzles included: brass adjustable, 2 flat fans, and foaming nozzle. Also accepts TeeJet nozzles.