2018ISO 10104:2018 Assembly tools for screws and nuts - Double-headed box wrenches, deep offset and modified offset - Outside dimensions
2001ISO 10104:2001 Assembly tools for screws and nuts - Double-headed, deep offset and modified offset, box wrenches - Length of wrenches and thickness of the heads
1990ISO 10104:1990 Assembly tools for screws and nuts; double-headed, deep offset and modified offset, box wrenches