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                                              JBC Legacy Watch Parts Database

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                                              MS-JA550

                                              MS-JA550

                                              Mainspring 20-2-22 T - MS-JA550

                                              $30.19

                                              Low stock: 3 units left in stock

                                              Rockford Mainspring
                                              • Width : 2.90mm
                                              • Strength : .220mm
                                              • Length : 22.00 in.
                                              • End Type : TEE - T End
                                              • Size : 18/S
                                              • Factory Number : 644

                                              Specifications

                                              Historical items
                                              7121-T
                                              Interchange items
                                              7121-T, BC0622852, JA-550, and JA550
                                              Weight
                                              0.1 oz

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