Beckson Black Vinyl Edge Trim Trim-Mate This Beckson vinyl edge trim is the newest labor-saving trim on the market today. Constructed of all-vinyl, this trim features a serrated metal reinforced self-locking insert. With no rivets and no adhesive, just snap it on and it will stay put. It is excellent trim for rough edges of fiberglass and wood. Features All-Vinyl Serrated Metal Reinforced Self-Locking Insert For Rough Edges Of Fiberglass and Wood Will Bend Into A 4 Circle No Rivets No Adhesive S