CL - Classic

Volume equivalent to Bach's “C” models - Deep cup - Comfortable rim - Throat 4.0 mm (#22) - Exclusive design.

M - Medium

Volume equivalent to Bach's “D” models - Medium cup -  comfortable rim - Throat 3.7 mm (#26) - Exclusive design.

MR - Medium Shallow

Volume between Bach “D” and “E” models - Shallow medium cup - Wide comfortable rim - 3.7 mm throat (#26) - Exclusive design.

RV - Shallow in “V”

Volume equivalent to Bach's “E” models - Shallow cup - Standard comfortable rim - Throat 3.7 mm (#26) - Exclusive design.

DC - Double Cup

Depth of first cup equivalent to Bach's “E” - Depth of second cup equivalent to Bach's “C”, But with "V" Format - Standard comfortable edge - Throat 3.7 mm (#26) - Exclusive design.

DCF - Double Cupr Deep

Depth of first cup equivalent to Bach's "D" - Depth of second cup equivalent to Bach's "C", but woth "V" format- Standard comfortable edge - Throat 4 mm (#22) - Exclusive design.