Spindle mounted reusable conical mandrels.

M3 - Cartridge Rolls, C4, C5, C7, S1, S2, S3.
M5 - Cartridge Rolls, C6, C8, S3.
M6 - Cartridge Rolls, C9, S4.
M7 - Cartridge Rolls, C10, C11, S5, S6.