Paasche's Salon Airbrush Tanning Set is packed with the single action HS model airbrush, 10 Air Hose, (2) 3 ounce bottles, D3000 compressor with tank and 16oz of 8% DHA Leisure Tan.The HS model features a special locknut, which allows the solution bottle to lock onto the brush.This prevents the bottle from falling off the airbrush while in use.Simply spraying hot water through the brush is enough for cleaning. The part number for this kit was changed from STS-SET to STS-1S.