1/4" opening size black PVC coated hot dip galvanized steel.
Typically used to exclude all snakes including baby snakes, moles/voles or the smallest animals. Also great for almost any application where you need to exclude or contain chewing animals. The small opening size makes it difficult for chewing animals to get their teeth inside for leverage with their teeth to chew.
Hot dip galvanized after welding
Black PVC coated
17ga after coating 20ga before coating