There is a 75 mm stainless threaded cup head bolt ( with the cup head cut off but retaining the 12 mm square section) embedded in the resin - the bolt is secured in the mould and the resin poured around it. So yes, its as strong as the originals. I like to call the KKCADD - or KK's Candy Apple Donkey Dicks :rofl: :rofl: Man it felt so wrong working with the lever handles. Got a very odd look from one neighbour and had to go over and show him what it was so he didnt think I was running a dildo manufacturing business :rofl: