We can supply more series of stepper motor with more sizes: ZYJ SEREIS,KTYZ SERIES,BYJ SERIES AND BYG SERIES. We can supply more series of stepper motor with more sizes: ZYJ SEREIS,KTYZ SERIES,BYJ SERIES AND BYG SERIES. if any demands,pls send us your details withdrawing and data so that we will price to you. Stepper Motor series