The MILWAUKEE® Grease Penetrating Head for the M18 FUEL™ High-Speed Chain Snake delivers the ability to open up fully blocked up grease blockages. Combining the penetrating head with a chain knocker will deliver the best results in opening up and delivering a wall-to-wall clean. The steel penetrating head features durable construction to tackle tough clogs in 1-1/2 in to 4 in lines. Featuring stainless steel set screws for corrosion resistance. Additional accessories are available for descaling: 1-1/2 in Carbide (48-53-3024), 2 in Carbide (48-53-3025), 3 in Carbide (48-53-3026), 4 in Carbide (48-53-3027).