The Instructions that came with my gp CrMo sockets say:
Only use impact sockets with power driven or impact tools. Do not use impact sockets with hand tools such as ratchets, breaker bars, leverage bars or torque multipliers. (Safety Instruction #2)
Why is this so? I understand using a Cr-V socket on an impact wrench can have the socket burst without warning, or damage the wrench. However, this is the only reference I found that the opposite is not allowed (as per safety!) -- anyone know why this might be?