Compatible with Babylock Sewing Machine Models: B15, B17, B21, BL23, BL37, BL40, BL40A (Grace), BL66, BL137A2 (Sofia 2), BL200A (Elizabeth), BL1556, BL2160, BL6300, BL6800, BLCC (Crafter's Choice), BLCC2 (Crafter's Choice), Decorator's Choice BLDC, BLDC2 (Decorator's Choice), BLMY (Melody), Quilter's Choice BLQC, Quilter's Choice 2 BLQC2, Ellegante BLG, Ellegante 2 BLG2, Ellageo BLL, Esante BLN, Ellure BLR, Ellure 2 BLR2, BLSO Ellisimo, Espire BLSR, BLSY Symphony, BLTP (Tempo) INT (Intrigue). Compatible with Bernina (Bernette) Sewing Machine Models: H70. Compatible with Brother Sewing Machine Models: BC1000, CE-4000, CE-5000PRW, CE-5500, CE-5500PRW, CE-8080PRW, CP-6500, CP-7500, CS-5055PRW, CS-770, CS-6000, CS-6000I, CS-8060, CS-8100, CS-8150, CS-8200, DS-120, DS-140, ES-2000, EX-660, FS-20, FS-40, FS-40WT, HE-240, HS-2000, HS-2500,Innovis 40 (NS40), Innovis 80 (NS80), Innovis NX800, Innovis VQ3000, Innovis NX2000, JS-23, LB-6770PRW, LB-6800PRW, LS-1217, LS-30, LS-590, LS-1520, LS-2000, LS-2020, LS-2125, LS-2125b, LS-2125i, LS-2129, LS-2130, LS-2150, LS-2160, LS-2220, LS-2720, LS-2725, LS-2820, LS-2825, LS-2920, LS-400, LS-590, LX-2500, LX-3125, LX-3125e, NS-40, NS-80, NV-750E, NV-780D, NV900D (Innov-ís 900D), NV-1000, NV-1200, NV500D, NV1500D, NV2500D, NV4000D, NV4500D, NV6000D, NX200, NX250, NX400, NX450, NX-450Q, NX600, NX650, NX800, PC-210PRW, PC420PRW, PE700, PE700-2, PE-770, PE-780D, PS21, PS2300, PS2500, PS3700, PX100, PX150, PX200, PX300, QC1000, RS15, RS25, RS35, SB3129, SB530T, SB170, SE-270D, SE-350, SE-400, SL-7, SQ-9000, SQ9050, VX1435, XL2120, XL2121, XL2130, XL2140, XL2150, XL2220, XL2230, XL2240, XL2250, XL2600I, XL2610, XL3010, XL3022, XL3025, XL3027, XL3030, XL3100, XL3200, XL3500, XL3510, XL3750, XL3800, XL4010, XL4020, XL4030, XL4050, XL4060, XL4040 XL5010, XL5011, XL5012, XL5020, XL5021, XL5022, XL5030, XL5031, XL5032, XL5050, XL5060, XL5070, XL5100, XL5130, XL5200, XL5232, XL5300, XL5340, XL5500, XL5600, XL5700, XL6040, XL6050, XL6060, XL6452, XL6552, XR31, XR33, XR34, XR35, XR37, XR40, XR46, XR52, XR52C, XR65, XR1300, XR-4040, XR-7700, XR-9000, XR9500PRW, X-5. Compatible with Husqvarna Viking Emerald Models: 116, 118 183. Alternative Part Numbers Include SA156, SA165, X52800120, X52800-120, X52800-050, X52800050 XA5537051 Bobbins sold 10 per pack X52800150