bi-metal-hss-hole-saw
PFERD HSS Hole Saw LS 32 32MM 1.1/4Hole saws made from tough, shatter-proof, sturdy HSS bimetal for cutting out holes. Thread: LS 14–LS 30 = 1/2–20 LS 32–LS 152 = 5/8-18 Matching arbors: LS 14–LS 30 = LSS 1, LSS 4 LS 32–LS 152 = LSS 2