N866410 1/2 inch impact wrench anvil conversion assembly for DeWalt DCF899 Type 4 20V series What this product is - A 1/2 inch drive anvil conversion set for the DeWalt DCF899 Type 4 generation of 20V max impact wrenches - Part of the DCF899 series generation 4 tooling - New 20V DCF899 Type 4 Impact Wrench 1/2 Anvil Set Compatibility - DCF899HB-Type-3 - DCF899HP2-Type-1 - DCF899HP2-Type-3 - DCF899M1-Type-1 - DCF899M1-Type-3 - DCF899P1-Type-1 - Compatible with part number N866410 are the following tools: DCF899B-Type-1, DCF899B-Type-3, DCF899HB-Type-1 Function and attributes - Provides a 1/2 inch impact wrench anvil option for the DCF899 Type 4 platform - Enables use of 1/2 inch drive sockets with compatible DCF899 Type 4 tools - Designed to fit the 4th generation DCF899 series Use scenarios - Automotive service and repair: convert to 1/2 inch drive for heavy-duty socket work on wheel fasteners and other large fasteners - Construction and equipment maintenance: use with 1/2 inch sockets for mounting and disassembly of large bolts on machinery and structures - General workshop tasks: swap to 1/2 inch drive for frequent heavy-duty fastener removal and installation while using DCF899 Type 4 tools