For Babylock models: BL3-402, BL3-426, BL400, BL402, BL4-428, BL4-428NS, BL4-436, BL4-625, BL4-714, BL500, BL1000, BL1400 BL1750, BL2000, BL2300, BL2500, BL2800, BL3200, BL5180, BL5180NS, BL4000, BL5020, BL5370ED, Elna 149 200 series, T-34D, Necchi 521, Pfaff 756, 4762, Riccar R250, 414, 469FA, 515, 525, 552,RM540, RM570, R650, R750, R916, R1500, R1570FB, R1800, R1850, 2950, 2800, 2900, 3300, 3400, 3500, 3600, 4001, 4003, R7620, 8400, 8500, Riccarlock RL613, RL613E, RL624, RL624E, RL634E, RL724E, RL739DE, RL749L, 564DE, Sergemate 300, 430, 432, 4350D, 5030, 5040, 5040L, ST600L, Simplicity SA1600, SL200, SL898, SL1000, SL1150, SL1200, SL1220, SL1250, SL1270, SL1400, SL6220, Sergers SL350, SL370, SL803, SL804, SL804D, SL843, SL880, SL4300, SL4360ED, SL4380ED, SL4380BH, SL4390ED, SL4690L, Singer 117, 14U444, 14U454, 14U554, 14U557, 14T967DC, 30215, 4552, 4562, 4572, 4622, 5102, 5107, 5122, 5123, 5124, 5127, 5932, 6408, 6412, 6416, 6423, 9005, 9008, 9010, 9015N503, 9018N503, 9027N503, 9027N603, 9032N503, 9020, 9030, 9034, 9044, 9420, 9420SN603, 9432SN603, 30218, 30920, 93220, 93234, Alphasew FA653, White 1730, 2037, 4050, Superlocks 1500, 1600, 4500, with #772 cord