Milwaukee 3/8" Anvil Assembly is designed to replace the anvil assembly included in the M12 FUEL 3/8" Ratchet. This low profile anvil assembly reduces the overall profile of the 3/8" ratchet, allowing for improved access in tight spaces and challenging applications. Installation requires snap ring pliers and a flat head screwdriver, which are not included. This assembly is an i solution for enhancing the functionality of your ratchet while maintaining a compact design. Model Number: 49-06-3053