Products number starting with HW-C is a product before mounting SS terminal. Products number starting with HW-G is a product after mounting SS terminal. Controller unit is same, but outer dia is different.
Color
Bridging piece holder: red
Target Model
Push-lock, turn-reset type push-turn locking type LED illuminated pushbutton switch LED illuminated selector switch incandescent illuminated selector switch phi30 zinc die-cast control unit for all models
I bought it for replacing the electric contact of the sewing machine I used for 26 years. It was nice to have burned contacts after long use. The price is reasonable and good.