EZ Duck / Game Call Expanding Steel Mandrel 3pc Set (1/2in, 5/8in, 3/4in) MT#2 Woodturning The best mandrels you can buy. Once you use these you will never go back to rubber bushings or pins. It is easy to make a duck call, deer, turkey, goose call with this mandrel set on your powermatic, jet, delta etc lathe. Solid steel Made in the USA - Top Quality!