Gentle and effective cleaning action quickly removes grime Special row of stiff bristles cleans under fingernails Contoured handle for a for gripping Bristles molded firmly in place Durable and lightweightThis 24 piece grime scrub brush comes in a display.  These are great for removing dirt and grime quickly. Also it's made with a special angled row of bristles which help to clean under fingernails. Great for any shop or Technician and made durable.