Starting From $47.00

AeroMarine Products #21 Hardener is a non-blushing, Cycloaliphatic Epoxy Resin Hardener designed to work with both AeroMarine Products #300 Epoxy Resin and AeroMarine Products #400 Epoxy Resin.  Both of these are intended to be mixed with the $21 Hardener at a ratio of 2 parts resin to 1 part hardener.  This hardener is sold here as the hardener only, without resin.  For purchasing the complete kit of resin and hardener, please see the previously linked kits.

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