If your cards are in the two white pcie slots on your motherboard, they are spaced out with 3 slot spacing, so I actually linked the wrong spacing above. Just select the "2 way Long Bridge" which is set up for one empty space between the two.
Otherwise if you want a little better of a look, you could go witha ridged 2 way bridge like this https://www.amazon.com/EVGA-Bridge-2-Way-Short-100-2W-0024-LR/dp/B00X5X3LLY/ref=sr_1_1?ie=UTF8&qid=1476579317&sr=8-1&keywords=sli+bridge
I will use the ridged bridge the one you shown me, but what worries me is I have noticed from the nvidia website that there were 3 types of bridges 40mm, 60.96mm, and the 81mm or (2, 3, and 4 slots). and I was worried which one will I need to use to fit my video cards on my motherboard
If your cards are in the two white pcie slots on your motherboard, they are spaced out with 3 slot spacing, so I actually linked the wrong spacing above. Just select the "2 way Long Bridge" which is set up for one empty space between the two.