HSS Annular Hole Cutter: suitable for all machines with weldon shank like Hougen, Janey, Alfra, BDS,RUKO, Rotabroch as well as radial drilling machine, boring machine, milling machine. DOC 12-60mm, 19mm weldon shank, 61-65mm with 32mm weldon shank, 7/16"-2-3/8" with 3/4" weldon shank; other shanks like one-touch shank, FEIN Quick-In Shank, Thread Shank are also avaialbe. HSS JetBroach Cutters, HSS hole saws, Thick steel pipe hole cutters, HSS annular cutters, HSS hole cutters, JetBroach cutters