• Pressure Spring 7x7 mm
• Suitable for Pfaff 3306 series sewing machines
• Also known as: 91-004006-05, 91004006-05, 9100400605, 9100400605000
• Also works as: 37286
• Bobbin case tension spring forked
• Suitable for Singer machines
• Can be used as: B1810-761-E00, 180720-001, 098-00-188-0, 106426, 158535-0-01, 271964
• Bobbin Case Tension Spring N/S
• Compactible with Singer 591D bobbin cases
• Also known as: 040-00040394, 40394-N/S, 40394N/S
• Can be used as: 2111127 DA, 540767 Singer