Single flat, double flat are available. The length of the motor shaft can be customized. To meet customers special requirements in different applications, we provide service of motor customization, including shaft shape options, shaft length, Electrical Modifications(power, current, voltage), Lead Wires & Cables, Pulley & Gear(different ratio), and IP Ratings, etc. For more, please contact us. For motor drivers, we provide OEM service, which helps customers do their brand promotion.