So lightweight they actually float! Non-absorbent block won't crack or chip. Polyester bristles rinse easily for quick clean-up and are ideal for use with most common chemicals. These tough,durable and economical brushes are perfect for a multitude of cleaning chores. Standard 8" or extra-long 20" handle. 1-5/8" bristle. Black brushes feature black block and bristles for a total color brush. 12/case.