Approximate Measurements Are:
Height - 13/32"
Diameter - 13/16"
Flat Top & Bottom.

These are New Plastic Bobbins # X52800150 that fit the following models.

BABYLOCK MODELS - B15, B17, B21, BL23, BL37, BL40, BL40A (Grace), BL66, BL137A, BL137A2 (Sofia 2), BL200A (Elizabeth), BL1556, BL2160, BL50A, BL6200, BL6300, BL6700, BL6800, BLAR, BLCC (Crafter's Choice), BLCC2 (Crafter's Choice), Decorator's Choice BLDC, BLDC2 (Decorator's Choice), BLDY Destiny, BLDY2 Destiny II, Journey BLJY, BLMY (Melody), Quilter's Choice BLQC, Quilter's Choice 2 BLQC2, Ellegante BLG, Ellegante 2 BLG2, BLG3 Ellegante 3,BLG2-NZ, Ellageo BLL, BLL2, BLMFO Flourish, BLMPR Presto, BLPY Spirit, BLMR, BLMSP, Esante BLN, Ellure BLR, Ellure 2 BLR2, BLR3, BLSO Ellisimo, BLSOG Ellisimo Gold, BLSOG2 Ellisimo Gold II, Espire BLSR, BLSR-EB, BLSY Symphony, BLTP (Tempo), BLTY Unity, INT (Intrigue).

BERNETTE MODELS - 50, 60, 70, 75, H70.

BROTHER MODELS - 10443, 150 Campus, 30 Prestige, 885V68, 990D Innov-is, BC1000, BC2100, BC2100WT, BC2500, BM2700, BM2700AS, BM2800, BM2800CT, BM2800FG, BM3500, BM3600, BM3700, BM3700CT, BM3700FG, BM3850, BM3850CT, BM3850FG, BP2100, BX2925PRW, CE1100PRW, CE4000, CE5000, CE5000PRW, CE5500, CE5500PRW, CE7070PRW, CE8080, CE8080PRW, CE8100, Comfort 10, Comfort 12, Comfort 15, Comfort 25A, Comfort 35A, CP6500, CP7500, CS100, CS100T, CS4000, CS5055PRW, CS5500H, CS6000, CS6000B, CS6000I, CS7000H, CS7130, CS770, CS80, CS8000, CS8002, CS8060, CS8070, CS8080, CS8100, CS8120, CS8130, CS8150, CS8200, CS8800PRW, CS9100, CX155LA, CX310LA, ES2000T, ES2010, ES2020, ES2200, ES2210, ES2220, ES2400, ES2410, ES2420, DS120, DS140, DZ2400, DZ2750, DZ3000, DZ3400, DZ820E, ES2000, EX660, FS100WT, FS130QC, FS20, FS40, FS40WT, GS2700, GS2786K, GS3700, GS3710, GS3740C, GX37, Hanami 27S, Hanami 37S, HC1850, HE1, HE120, HE120PKG, HE240, HQ17, HQ27, HQ33, HS1000, HS2000, HS2500, HS3000, HS9500, J17, JS2130, JS23, JS50E, JX1710, JX2517, L15, L25, L30, L35, L40, LB6770, LB6770PRW, LB6800, LB6800PRW, LB6800THRD, LB6810, LS1217, LS14, LS1520, LS17, LS1717, LS1717B, LS1717P, LS1817, LS2000, LS2020, LS2020P, LS2125, LS2125B, LS2125I, LS2129, LS2130, LS2150, LS2160, LS2220, LS2250PRW, LS2300P, LS2300PRW, LS2320, LS2350, LS2400, LS2720, LS2725, LS2820, LS2825, LS2920, LS30, LS3125, LS40, LS400, LS590, LX1700, LX2350, LX2375, LX2500, LX2763, LX3125, LX3125E, LX3850, NC21-S2, NC21-S3, NC21-SE, NQ1300, NQ1300PRW, NQ1400E Innov-is, NQ3500D, NQ550PRW, NQ700, NQ700PRW, NQ900, NQ900PRW, NS1150E Innov-is, NS40, NS80, NV1, NV1000, NV1200, NV1250D (Innovis NV1250D), NV1500, NV1500D, NV200, NV2500D, NV2800D, NV350SE, NV400, NV400SE, NV4000, NV4000D, NV4500D Duetta, NV4750D, NV5000 (Innovis 5000), NV500, NV500D, NV600, NV6000, NV6000D, NV6700D, NV6750D Quattro 3, NV700E, NV700EII, NV750D, NV750E, NV780D, NV900, NV900D (Innovís 900D), NV950, NV950D, NX200, NX200 Innovis, NX200 Pacesetter, NX2000 (Innovis NX2000), NX200LE, NX250, NX400, NX400LE, NX400QE, NX450, NX450Q, NX570Q, NX5000, NX5000, NX600, NX650, NX650Q, NX800, PC15, PC210, PC210PRW, PC420, PC420PRW, PC660LA, PE450, PE500, PE525, PE540D, PE700, PE700II, PE750D, PE770, PE780D, PRS100 Persona, PS, PS1000, PS1950, PS2000, PS21, PS2100, PS2200, PS2250, PS2300, PS2360, PS2470, PS2500, PS31, PS3100, PS33, PS35, PS37, PS3700, PS40, PS53, PS55, PS57, PX100, PX150, PX200, PX300, QC1000, QS480, RS11, RS15, RS25, RS250, RS260, RS35, RS40S, RS45S, RS5, RS7, RS9, S62, SB170, SB3129, SB530T, SB700T Simplicity, SB7050E, SB7500, SB7900E Simplicity, SC3000, SC6600, SC9500, SE270D, SE350, SE400, SE425, SF100, SF200, SF250, SF300, SL300, SL7, SM1400, SM1704, SM1738D, SM1740, SM2700, SM3701, SM6500PRW, SQ9000, SQ9050, SQ9185, ST371HD Strong and Tough, Star 27S, Star 37S, VE2200, Vesta Ministar Blue, Vesta Ministar Pink, Vesta Ministar Rose Violet, Vesta Ministar Rose Wine, VQ2400, VQ3000 (Innovis VQ3000), VX1005, VX1010, VX1020, VX1100, VX1435, VX1500, X5, XL2010, XL2030, XL2120, XL2120PRO, XL2121, XL2130, XL2130NT, XL2140, XL2150, XL2220, XL2220NT, XL2220PLUS, XL2230, XL2240, XL2250, XL2600, XL2600I, XL2610, XL2620, XL3010, XL3022, XL3025, XL3027, XL3030, XL3100, XL3200, XL3500, XL3500I, XL3500T, XL3510, XL3520, XL3570, XL3600, XL3750, XL3750FS, XL3800, XL4010, XL4011, XL4012, XL4013, XL4014, XL4015, XL4020, XL4030, XL4040, XL4050, XL4060, 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, XM1010, XM2701, XM3700, XN1700, XQ2700, XQ3700, XR1300, XR1355, XR23, XR29, XR31, X53140, XR32, XR3240, XR33, XR34, XR35, XR37, XR3774, XR40, XR4040, XR46, XR46C, XR52, XR52C, XR53, XR6600, XR6060, XR660, XR65, XR65T, XR7700, XR9000, XR9500PRW, XRX55, XS2070, XS2080, XS2100, XS3109, XS37, XV8500D, XV8550D THE Dream Machine 2 Innov-is.

HUSQVARNA VIKING MODELS - Emerald 116, 118, 183.

JUKI MODELS - HZL-25Z, HZL-27Z, HZL-35Z, HZL-E61, HZL-E70, HZL-E71, HZL-E80, HZL-F300, HZL-F400, HZL-F600, HZL-G110, HZL-K65, HZL-K85.

Alternate Part Numbers Include - SA156, SA165, X52800120, X52800-120, X52800-050, X52800050, XA5537051, Class 15.