If you are looking for the MG16B series, other characteristics/deceleration ratio (gear ratio), please search below. Deceleration Ratio: 1/64: MG16B-060-AB-00 Nidec; Deceleration Ratio: 1/107.2: MG16B-120-AB-00 Nidec; Deceleration Ratio: 1/304: MG16B-300-AB-00 Nidec.