3D ACA 520 Finishing Polish is stage 2 of our True Paint Correction system. ACA 520 quickly corrects any painted surface leaving a hologram-free, glass-like finish without the need of adding fillers, which eliminates the possibility of “dye-back.” 520 paired with a black foam polishing pad on either a rotary or DA polisher. 520 will leave you with an amazing depth of colour, swirl free finish. No fillers – long lasting, flawless finish every time. Only use minimal product as it stays wet and goes a long way. Keep pad flat on surface while making nice slow passes.