Could be West Marine....I've used their larger pump system stuff and it's good. Never tried the tubes before.

https://www.westmarine.com/buy/west-system--six10-thickened-epoxy-adhesive--10287571?mrkgcl=481&mrkgadid=3252486975&rkg_id=h-b278c4ec7c39b246e87e0d051024da59_t-1513604263&cm_mmc=PS-_-Google-_-GSC%2520-%2520West%2520Marine%2520Branded-_-10287571&product_id=10287571&adpos=1o1&creative=231267080879&device=c&matchtype=&network=g&mrkgadid=3252486975&mrkgcl=481&rkg_id=0&gclid=EAIaIQobChMIwZf0ndeT2AIVHrjACh34DQHtEAQYASABEgLBx_D_BwE