Signature series speed primer is a premium, 2K urethane primer surfacer that covers in as little as two coats and air dries in 30 min under ideal conditions!. This easy to sand primer surfacer can be applied directly to metal, provides excellent gloss holdout and is highly resistant to film shrinkage. Save 30 to 40% on your entire labor process time when used in conjunction with Transtar's No Mix low VOC basecoat and Signature series speed clearcoat.