"Hudson Bak-Pak sprayer is powered by a 1 HP gas engine for agricultural and pest control applications. Comes complete with quick-adjustable padded shoulder straps and a padded backrest of maximum operator comfort. Dimensions L x W x H in. 15 x 12 x 23, Pressure PSI 464, Pump Type 1 HP engine, Spray Pattern Cone, stream, fan, Spray Height ft. 18, Broadcast Width ft. 20-25, Tank Size gal. 6 1/2. Portable, high-efficiency backpack sprayer 1 HP 2-cycle engine 6 1/2-gallon poly tank Quick adjustable padded shoulder straps Padded backrest for operator comfort Four speed spray range / PSI control knob-minimum of 21 ft 15 Bar 217.5 PSI maximum of 29 ft 32 bar464 PSI Quick removal of excess chemical and easy cleaning with separate tank drain outlet Rotatable cone nozzle head provided Large 5 3/4in. tank opening for easy filling Filter keeps dirt and debris out of tank and reduces clogging 25 liter capacity water tank made of high density PE material Tool kit included for easy assembly 25.6cc engine 20-oz. fuel tank Brass lance and shut-off"