Oil-Dri L90790 3" Diameter x 4' L Grey Universal Absorbent Sock with Recycled Cellulose Filling, (12 Socks/Box) Each 4 foot sock is filled with recycled cellulose and can absorb up to one gallon of fluid Use socks at the base of machinery or around drums to absorb non-aggressive fluid leaks Prevent spills from spreading out onto shop floors and working area's