Pocket size,without cable and easy to take
The Palm size of the plugs though fit very nicely behind the dash of car, without cable really helps as it prevents tangles and makes it invisible to thieves.
The adapter was flexible enough with 4" palm size that you are able to conceal all of it behind the dash.

High-quality and environmentally material 
Durability With Smooth 16 pin interface, it plugging and it can up to above 10, 000 times.
Flame retardant high temperature, adopted with high quality pure copper wire and insulating plastic, preventing short circuit and any safety hazards because of overheat. Tenacious round wire, it won't easily cracking even spend for a long time.

Protect OBD2 Interface
Use the extension cable to save the wear and tear and protect your OBD2 interface.