The 6" Smooth Seam Roller is a MUST TOOL for every carpet installer and repair professional! The 6" Smooth Seam Roller applies pressure to the carpet backing to help ensure a good bond with the hot melt adhesive. The 6" Smooth Seam Roller has a hard plastic roller for use on plush, saxony, deep pile berber and all loop pile constructions. The Smooth Roller will not untwist fibers nor snap loops.