We produce our super slick moldboards out of solid 1/2" thick UHMW polymer. These are not merely moldboard covers, they are solid polymer moldboards.
We carefully bevel the bottom of the moldboard so that it will match the thickness of the existing plow share.
As this moldboard is 1/2" thick and most shins are 5/16" thick, we suggest that you replace shins at the same time you replace your old moldboards.
We offer two shin options when using our poly moldboards. The first is a 1/2" thick poly shin and the other is a double thick steel shin. The double thick steel welded shin is 2 standard shins welded together with the leading edge having a liberal amount of hardface applied to it.