... (2-9/16”)933-21/3265mm(2-9/16”)103465mm(2-9/16”)1134-1/265mm(2-9/16”)Overall LengthZinc Alloy Base to fit hole ... ,67,73,83mm with hex screwAl Alloy Base to fit hole saw 33,43,53,63,67,73,83mm with hex screwAl ... Alloy Base to fit hole saw 73,83,93,103,113mm with hex screwAl Alloy Base ... to fit hole saw 33,43,53,63,67,73,83,93,103mm with ...