Review on SEPTLS585373002 Irwin Hole Mandrels 373002 by Michael Caste

.to know its thread and pitch: 1/2-20. I don't know the thread and pitch of sister item 373001, but this item 373002 is definitely 1/2-20. It works reasonably well with 7/8" and 1-1/8" hole saws and probably other sizes, but I've tried the two sizes mentioned. so I can testify. Docking 1 star due to lack of relevant information on the label.