Ok, it says:
Regular 3/8" ratchets don't fit for these applications.
A lot of fasteners are on cast parts with limited access, where ratcheting wrenches don't fit and thin-walled, short sockets are needed.
Characteristics and advantages:
- Special ratchet and sockets with a low profile for extremely tight quarters
- Up to 33% less tall than comparable ratchets
- Dual80 technology for high torque and many teeth
- Flat grip for working in difficult to reach areas
- Thin-walled sockets for good access
- Works even where traditional 3/8" ratchets and sockets don't work anymore