3-d type valve seat cutter tool holder and drive unit. this comes as seen in pictures it is 3/4" drive unit with a .375 pilot tool holder. this won't break it is all stainless steel!! thanks for looking. this tool uses pilots with 3" to 3.500" pilot top. page 4 in 2026 Goodson cat. ALL you need is a carbide cutter & pilot that is your size and a bounce spring. These tools are pre-run to make sure they are right
