Two-part 250g MID-CURE™ 15 min. epoxy used in larger areas where more working time is needed. This epoxy is more water resistant and can be used as a substitute for QUIK-CURE™ 5 min epoxy in most applications. MID-CURE™ the most flexible epoxy and is ideal for gluing to fiberglass surfaces. Allow 45 minutes before handling parts and 2 hours for full strength.