Prime-Line Products T 8763 Zipper Pile Installation Tool, 1-1/4 in., Concave & Convex Edges, Steel Wheels, Wood Handle Used for the installation of Zipper Pile Weather-stripping 1-1/4 in. concave & convex rollers on 5-1/8 in. handle Natural wood color with zinc colored wheels Steel wheels and yokes on wooden handle Used for the installation of Zipper Pile Weather-stripping 1-1/4 in. concave & convex rollers on 5-1/8 in. handle Natural wood color with zinc colored wheels Steel wheels and yokes on wooden handle