Grounding, Earthing

Qmax Nano Technology Grounding Cable Set,  come with 3 cables 120cm/70cm/65cm, 1 x Qmax Mini Nano Fuel and high conductive L shape connector.

What does the Qmax  Earth Grounding System do? 
It gives huge improvement on electricity flow and stability by providing a direct ground path from the body, chassis and engine block to the battery negative.