VEVOR E Track Tie-Down Rail Kit, 30PCS 5FT E-Tracks Set Includes 4 Steel Rails & 2 Single Slot & 8 O Rings & 8 Tie-Offs with D-Ring & 8 End Caps, Securing Accessories for Cargo, Motorcycles, and Bikes
This product includes the necessary installation accessories, but does not include screws, which you will need to purchase separately. M6 self-drilling screws are also included.
In order to reach the 1500lb capacity how far away do the screws need to be? I have a flat bed trailer that has metal cross pieces every 16". Is that enough if i get 2 screws in the metal every 16"?