ResinLab Armstrong™ Epoxy Resin Adhesive A-12 Brown is a two component epoxy that is used on hard to bond surfaces such as plastic, wood, ceramics, and metals. It has the ability to have a flexible or rigid bond depending on the mix ratio. Part A, 1 qt Can. Armstrong™ is a trademark of Henkel and its affiliates in the US and elsewhere, and used under license. Product manufactured under license from Henkel.