This is knife setting gauge that will work on planers with a 3-3/16" head.  This will cover nearly all of the 20" planers available, Jet, Powermatic, etc.  Check your handbook for the actual size as it does make a difference.  This gauge will not work on the Delta as their head is 3".   Shipping on this item is free via USPS or UPS. I do combine shipping wherever possible. I do ship internationally. Just email me and I will quote shipping to your country. All shipments to Brazil must go Priority mail Express. All Brazilian shipping charges are on a quote only basis.