This standard BS ISO 11168:1995 Socket wrenches for spark and glow plugs is classified in these ICS categories:
25.140.01 Hand-held tools in general
This International Standard specifies the dimensions and the technical requirements for socket wrenches for spark- and glow-plugs.
The wrenches described in the present International Standard are for hand operation and are designed to drive spark and glow diesel plugs with hexagon drive.