The MILWAUKEE® INSIDER™ Box Ratchet 3/8" Anvil Adapter is designed to uniquely fit into the M12 FUEL™ INSIDER™ Box Ratchet allowing the use of existing 3/8" drive sockets and protecting the investment you've already made while delivering on performance and productivity. INSIDER™ Box Ratchet Adapters are available in ¼”, 3/8”, ½” & ¼” Hex, providing Ultimate Versatility.

• INSIDER™ Box Ratchet Adapters are exclusively compatible with the M12 FUEL™ INSIDER™ Box Ratchet
• Allows use of current 3/8" drive sockets with INSIDER™ Box Ratchet
• Laser etched part number
• Box Ratchet Anvil Adapters feature a chamfered end for quicker and more efficient insertion and removal
• Meets ASME Industry Standards
• Ball detent design for superior socket retention
• Additional INSIDER™ Box Ratchet Adapters are available in 1/4” and ½” Drive and ¼” Hex for use with driver bits
• New locking feature ensures retention between the tool and the anvil adapter when swapping sockets