I bought them off Amazon. I used DeWalt pilot point drill bits to drill the holes. It didn't come with the rivets so I annealed some 9/16ths bolts and spread them with a ball peen. It took about 45 minutes to do each pair, but bear in mind im pretty new to this so the average blacksmith would probably be a lot faster. I also used my Picard hammer, a chisel, an angle grinder, and a bench grinder/wire wheel. I think it was about $40 for the kit instead of hundreds for a complete set plus it's good practice https://www.amazon.com/dp/B08NWSJ461/ref=cm_sw_r_apan_glt_fabc_EFR3F85AMRS0CCYVP9ZA