Step 1. Ensure that the car floor has enough space before making holes in the floor mat (if your mat doesn’t have them pre-made). Step 2. Turn the mat upside down, take a hole cutter, and make two holes in places that have minimum obstruction of 2 inches from both borders. Step 3. Insert the cap through the hole and put the sliding washer, beveled side up, onto the cap post. Step 4. Make sure to screw the cap into the anchor until the cap post end becomes even with the anchor’s bottom. Do the same with the other hole in the mat. Step 5. Place the mat at the desired place. Unscrew the caps (check if all spikes are fully inserted, push them down or step on them if not) and screw them into the anchors.