Bulb 15 Watt 5/8 Screw-In Clear 

Babylock BL3000, BL4000, BL5000, Bernina 730 older version, - Bernette 203, 204, 234, 334, 334D, 334DS, 335, 335D, Bernina 730 older version, - Riccar 414, 500, 515, 525, 555FA 555SU, RM570, RM571, RE581, RE591, R916, 601, 606, 608, 666FA, 666SU, SZ702, 706, 707, 800R, 805, 806, 807, 808E, 888, 906E, 2600, 2800, 2900, 2910, 2925, 2950, 3300, 3400, 3500, 3600, 4001, 4003, 7500, 8400, 8500, 9150, 9160, 9600, 9700, 9800, 9900, most common 5/8in screw in, - Bernette item 502010.10.93