Upper Knife, Babylock, Elna, Riccar, Simplicity #60507

Compatible with Babylock Serger Models: BL202, BL302, BL300, BL400, BL430, BL432, BL450, BL450A, BL4350D, BL5030, BL5040 & BL5040L. Compatible with Elna Serger Machine Models: T3, T33, T34 & T34D. Compatible with Happylock Serger Machine Models: 1867. Compatible with Riccar Serger Machine Models: 564DE, RL613, RL624E, RL634DE, RL613E, RL624, RL634E & RL724E. Compatible with Serge Mate Serger Machine Models: 300, 432, 430, 5030, 5040 & 5040L. Compatible with Simplicity Serger Machine Models: SL370, SL350, SL803, SL804, SL804D, SL843, SL4300, SL4350D, SL4360ED & SW432.