RCP's Clay Blue in Fine grade is a must-have for the decontamination step of a thorough detail, deep cleaning your paint before polishing or sealing. This fine clay bar removes embedded contaminants like tree sap, insect residue, paint overspray, road tar, rail dust, and stubborn dirt that washing alone leaves behind. We recommend using it with a clay lubricant or soapy solution, gliding the bar gently across the surface until the paint feels smooth as glass. The result is a super clean, super smooth finish that is ready for the next stage of your detail. This clay bar paired with a quality clay lubricant and a plush microfiber towel will take your detailing experience to the next level.