Stubborn deposits such as tree resin, insects, iron deposits, tar and more can easily become lodged between the pours of the paint and reduce the optical clarity of your paint, thus creating a dull and rough shine. Regular washing may not be able to remove all of this contamination, so you will need some extra cleaner power to take care of it. Simply spray a clay lube onto the surface and glide the Abrasive Clay Bar Rkr over these areas to pull out the contamination. Once finished, you will be left with smooth surfaces such as paintwork and glass, without affecting or damaging them. This will leave your paint ready for various detailing steps such as polishing, or protection application. Just note that the Abrasive Clay Bar is designed for heavily soiled vehicles and this type of cleaning process can yield some marring during removal. This marring however is light and can be easily removed with a follow up polishing step. We recommend cutting this extra large bar into 4 to 5 pieces so you get multiple fresh uses from one large 200 gram bar. Store the bar in the included container to protect it from contamination and to keep it from drying out between details. Don't let embedded contamination sit in your paint, remove it with the Koch Chemie Abrasive Clay Bar Rkr today!