Solid block, meaning no chance of separation from shroud. Fully washable, long-lasting synthetic bristles will not wear down, break or fall out like conventional corn bristles. Flagged PET (Polyethylene Terephthalate) bristles sweep the finest particles. Sturdy 48" x 15/16" metal handle with swivel hang cap will not crack, warp, or splinter. Swivel hang cap helps keep janitor closet clean and organized. 14" sweeping surface cleans larger areas in less time. Deep thread insert prevents breaking of handle tip.