These clips are used to mount pieces of 1/2" PVC that have bullet style pixels mounted in them to vinyl J-Channel that surrounds windows, doors and garage doors. The clips have a relief on the back side that allow for up to 18awg wire to pass through allowing you to get the most out of your spacing. These clips have an additional 1/2" material added to them to allow for placement further away from the house. The clips are CNC cut out of 3/8" Marine Grade HDPE which is both UV stable as well as temperature resistant. I have found that 4 clips are sufficient for up to a 10 foot span. Simply attach the clips to the J-Channel and snap the PVC into place