T&E Tools Reamers are SKD11 polished steel HRC: 58-60.

Item No. Description
PT669A-1 14mm HSS Flat Seat Reamer 42.5mm long.
PT669A-2 15mm HSS Flat Seat Reamer 33.5mm long.
PT669A-3 18mm HSS Flat Seat Reamer 31.5mm long.
PT669A-4 18mm HSS Flat Seat Reamer 42.5mm long.
PT669A-5 1/4" Drive T handle 152mm long with comfort grip.