Couple of questions

[k0ua]

Not nesessarily. Depends on the intended use and the conditions its used under. Some applications where I have used zip-ties do not allow the Ty-Rap brand or similar design zip-ties specifically because of the metal 'tooth'. I agree they hold the best, but that does not mean the rest are junk.

I agree, I use a lot of the molded in integral nylon tooth ones as well as the Natural color (white) tie-wraps as well. I just depends on the application. And indoor application where you do not need the absolute tightest wrap the natural color is fine and saves money. But if you want the ultimate strength and longevity for an outdoor application, like on a tower (or this application on a tractor) then I would go with a metal tooth black tie-wrap.

James K0UA