Zeikos Tripod Quick-Snap

I recently got into photography and was looking for a tripod in my closet when I found a Zeikos tripod but it was missing its top quick-snap camera holder. So I decided to design this piece to snap in place and hold my camera, a Cannon EOS 60D, but you do need to pull open the latch to slide the part in. The bolts that were used were found around the house and I don't know what size they are. I looked until I found a bolt that fit my camera.