3M 05907 Polyolefin Adhesion Promoter - 12 oz. Adhesion promoter to be used with 3MTM AUtomixTM EZ Sand Flexible Parts Repair material, part numbers 05895, 05896, and 05887 when repairing polypropylene and ethylene propylene exterior and interior parts Appy adhesion promoter after every grinding or sanding step until plastic is fully covered