West System Mini Pump Kit for 301 and 305 in Quart, Gallon, 5 Gallon siz

They do what there supposed to do.

These pumps are perfect for mixing epoxy and make it easy to get the ratios correct. I appreciate that the cans and pumps are designed so they are mistake proof from mixing up pumps with resin and hardener.

Easy to identify which is which for resin or hardener and the pump out the right amounts.

I have been using the West System 5:1 epoxy system for over 15 years, and have been extremely satisfied with the consistency and results....so much so that I decided to treat myself to this new set of metering pumps. I do a lot of small batches and these pumps make that task so easy!

These worked perfectly. I was irresponsible and did not do a "test pour" to check if the proportions were right. I literally came home from work, slapped these things onto the 105 resin and 207 hardener, went through half a gallon of 105 and 1/6th gallon of 207. No problems with the curing/hardening process. I did see someone else comment negatively about how the plastic was brittle and broke for them after a couple pumps. Because of that I was cautious at first but after a while I saw that point was null and void. I was not gentle with these suckers, I just went to town on them. Included hardware notes: This comes with the 3 nozzle heads you see in the picture, 1 is for the resin, 2 are different sizes for hardener containers of differing spout sizes. There is also extension tubing included for if you need to fine tune the length of the nozzles.