Many people have asked for " METRIC " threaded bosses, We will be listing several more in the near future. These are just a start. More MADE IN THE USA pieces.  " Sale is for four pieces ( 4 )."  WE make all of our own products for the fabricator, biker, four wheeler, do it your selfer  and racer.These steel weld bungs are made from USA made quality 1018 medium carbon steel.                  They are 3/4" ( .750" ) diameter.  .390 - .400  thick, with a METRIC 8 mm x 1.25 THREAD "  These will weld to your tank or project without any problems, like distortion. Thick enough to not warp, small enough to not add too much weight. Use these to mount seats, tanks, accessories, anything that needs threads to hold it in place.   " SHIPPING CHARGES TO THE USA ONLY,  All others will be calculated for actual cost of shipping. "