guaranteed to fit babylock sewing machine models:
b15, b17, b21, bl37, bl6300, bl6800guaranteed to fit brother sewing machine models:
ps21, ps-3100, px100, px150, px200, px300, rs-15, rs-25, rs-35, xl5010, xl5011, xl5012, xl5020, xl5021, xl5022, xl5030, xl5031, xl5032, xl5050, xl5060, xl5070, xl5100, xl5130, xl5200, xl5230, xl5232, xl5300, xl5340, xl5500, xl5600, xl5700, xl6040, xl6050, xl6060, xl6452, xl6552, xl6562, xr46, xr52c, xr65t