Yea that's the stuff ive got. Its ridged but bends in strange ways. Im going to have a go at attaching it to a bit of 50mm wide ally. But for qhat ive spent on them I could have made up a fiberglass set
Crap pic but its cold out there , it hold up really well over most of the arch but when the bend tightens up it seems to whant to pull in hence my thinking that a strip off ally with the rubber on top will work
I have that typein the garden and it's warped.
I have there older style edging as flares which is stronger it has thicker rolled edges and doesn't warp they substituted it for a product of lesser quailty yrs ago.