Durable Plastic Handle: Made from plastic for long-lasting use and easy cleaning. Stiff Bristle Bristle Brush: Bristles are extra stiff for effective cleaning and polishing. Mounted Design: Bristles are mounted on a plastic handle for comfortable grip. Buffalo Brand: Part of the Buffalo Abbott Robinson Dental Lab line of brushes. Package of 144: Comes in a package of 144 brushes for bulk use. Brush Abbott Robinson #9 Extra Stiff gross 9/16 inch