They're made out of 3/8" polyethylene. Attachment will be with stainless screws. In hindsight I should have put the mounting holes in the grooves....but this will work. I'll just have to countersink them.
I need to see if you can produce a couple hundred for me at Pantera.You did a great job on them.Enjoy that pantera this Summer and let me know if you need anything.Take it out in some ruff water. Regards, JO