Hi Wayne, to ensure we answered your question as accurately as possible, we reached out to Starborn. This is the response we got: "Our Smart Bit for wood plugs will normally cut between 250 – 300 holes in Ipe which is a very solid board. I have not worked with Mangaris myself but if they use the correct drill and process they should get that many holes. Be sure to use a corded drill for high speed and allow the bit to cool off every couple of holes. I have some contractors that will dip the bit in cool water after a few holes. This will prolong the life of the bit. However, because these hardwood boards are so dense we cannot guarantee a certain number of holes. Plus it will depend on the end user." Hopefully this helps!