2PCS Babylock BLE1,BLE1/SX,BLE8 (Evolve)Upper/ Lower Knife #B4401-01A & B4471-02A Babylock Upper & Lower Knife Set B4401-01A,B4471-02A Fits BabyLock: BLE1, BLE1/SX, BLE1DX, BLE1LX, BLE1AT (Imagine), BLE8 (Evolve), BLE8W, BLE8W-2 (Evolution)