Upper Knife For Babylock Sergers.

Part # : 61425

Fits Babylock models : BL402 Protege, BL550, BL5370ED, SL4380ED, ST600L 

Fits Riccar models : RL739DE, RL749L 

Fits Simplicity models : SL4380BH, SL4380ED, SL4390ED, SL4690L

To verify the compatibility with your sewing machine, please e-mail the brand & model number.