This 3M PPS adapter is much shorter than the typical one used with bathtub refinishing, which helps keep it more compact. The 3M PPS cup has a thin plastic film covering the outside to protect the cup from overspray. After using it a while, you can replace this to keep the cup transparent and easy to sue while measuring ratios of paint.
You could also use this for spraying adhesion promoter instead of wiping it on. It saves a lot of time. I would use one of the 3 oz. Liners and have just enough to apply adhesion promoter to a typical bathtub. This gun can also be used with the large cup.PPS Large Type H/O Pressure Cup, part number 16124. See pictures to compare size of this setup to a standard HVLP gun, also pictures showing how this setup would work spraying a sink. The item "Compact HVLP Turbine Paint Spray Gun with3M PPS bathtub refinisher tight areas" is in sale since Friday, February 28, 2020. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Pump Parts & Accessories\Other Pump Parts & Accessories". The seller is "bradworks03" and is located in Danbury, Connecticut. This item can be shipped to United States, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Turks and caicos islands, Bangladesh, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Pakistan, Paraguay, Uruguay, Canada, South africa, Antigua and barbuda, Saint lucia, Barbados, Bermuda, Cayman islands, Sri lanka, Maldives, Oman, Reunion.