AXIS P31/P32/P39 3 in 1 Primers are quick to dry and easy to sand. P31/P32/P39 3 in 1 Primers are designed for use over Metal, Aluminum, SMC/Fiberglass and Plastics. P31/P32/P39 3 in 1 Primers are excellent for use over sand scratches and body filler prior to painting. Apply to existing properly prepared cured painted surfaces, polyester body fillers, metal, aluminum, plastic and SMC/Fiberglass. P31/P32/P39 3 in 1 Primers provide great film build and flexibility.