Wolfgang Chemical Resistant Pressure Sprayer The Wolfgang Chemical Resistant Pressure Sprayer is perfect for spraying wheels, tires, and wheel wells with powerful cleaners or for coating the engine compartment in degreaser. The sprayer is built to withstand a broad range of chemicals and it's capable of delivering stronger mixes of chemicals without clogging. The Wolfgang Chemical Resistant Pressure Sprayer has a pump on top to create the pressure. No pressure washers or air compressors are needed. You can sustain the pressurized spray by pressing the Lever-Lok button located at the top of the handle. This lock allows you to spray one-handed to coat surfaces while washing or wiping with the other hand. The spray tip on the Wolfgang Chemical Resistant Pressure Sprayer is adjustable so you can have a mist or a strong spray - whatever the job requires.