When it’s time to replace the brush on your OXO SteeL Soap-Squirting Dish Brush, just push up on the tab to eject it. Attach the new brush head by simply sliding it on. Durable nylon bristles easily scrub away baked-on food and are safe for nonstick cookware. Includes two refills. Measures 4" x 2¼" x 1½".