Specialty Blow-Gun Assortment includes: a blow-back model, air-bender model, and an air-scraper modelThey are ideal for engine repair, machine shop, Ag/construction, and general industrial applications and much moreAir-Bender Blow-Gun reaches hard-to-access areas with focused, high-pressure, 90 degree angle output Ideal for blowing out channels, ports, or reaching around obstructionsAir-Scraper Blow-Gun features a stainless-steel shaft and scraper tip that combine air pressure and scouring action to remove and blow away stuck-on debris for faster cleaning than other methods Ideal for cleaning gasket surfaces, removing grease, rust and more Blow-Back Gun dislodges and evacuates debris form the bottom of a bolt hole and out of all the threadsIdeal for cleaning head-bolt holes, anchor-bolt holes, manifolds and moreIncludes #8056 Air-Bender Blow Gun, #8057 Air-Scraper Blow Gun, #8058 Blow-Back Blow Gun