3M Auto-mix EZ Sand Flexible Parts Repair Kit, 13 oz tubes. Two-part epoxy used to repair most flexible plastic parts, including bumper covers and other plastic body panels. This product should NOT be used with SMC/fiberglass. This product is easy sanding and formulated for excellent feather-edging. 3M Auto-mix EZ Sand Flexible Repair material offers a 10 minute work time and can be sanded with grade 180 abrasives in 30 minutes resulting in an excellent feather-edge. It is recommended that 3M`s Poly-olefin Adhesion Promoter 05907 be used when working with polypropylene and ethylene propylene interior and exterior parts. Paint Time 15 Minutes. 05896