I know what they are not that you showed me a pic. I have pulled only a handfull of pumps with those things on them. Again, homeowners installs.
When I lived in Michigan, some 26+ years ago, some of the drillers were trying out the poly pipe. I imagine it's the norm today. Here in Florida, PVC Sch 80 (and lighter) is the norm.
Another thing to consider, three wire pumps have far greater starting torque than two wire pumps. Another good reason to use two wire pumps when at all possible.
I have a cure to your poly problem with rubbing wire. Always put the wire on the opposite side of the pipe from where it's going to rub.
bob...