The laser light (for use with pantographs) attaches to a mounting post with a clamp. The mounting post attaches to a threaded hole on the thread-path side of Baby Lock LongArm machines.
Compatible machines: BLCJ18-3, BLCJ18-2, BLCJ18, BLCT16, BLJ18, BLTR16-3, BLTR16-2, BLTR16.