The link just shows the three minute cure type various others are available, from minutes to hours. I thought it great for a quick small repair, like a loose canopy, cowling etc... . and it's easy to mix. We use tihs stuff on strain gauges (some cost `12k or more) during vibration testing and in 25 years I've never seen an gauges fall off. I agree that at least the 30 minute from critical component repair. "bubble" sells that too and you know you have the right mix everytime.