Combo pack is designed for use in all of the following machines: SWINTEC 1000 PORTABLE WP SWINTEC 20 M SWINTEC 2000 SWINTEC 2400 SWINTEC 2400 DM SWINTEC 2416 DM SWINTEC 2500 SWINTEC 2600 SWINTEC 2640 SWINTEC 3200 SWINTEC 3500 SWINTEC 600 SWINTEC 640 SWINTEC PWP 1000 SWINTEC STUDENT