I have a GE electric knife. It is an old one but I need the replacement blades for it - there is no model number but there is a catelog number 34EK4 and a 506 under the motor description - the blades are about 11" total length - the serrated portion from the clip in is about 8" I would like to replace this part - the motor is still good and a lot bigger and heavier than the new ones thanks - dbjdanes@aol.com