Bundle 1 M1: BW-L (Black White and Long Wire) Bundle 2 M2: BB-S (Black and Blue, Short Wire) Bundle 3 M3: BW-S (Black and Blue, Long Wire) Bundle 4 M4: BB-L (Black and Blue, Long Wire) Specifications: Item Name: Spare Motor Compatibility: for Rizetero Color: Black and Blue Wire (Clockwise) for CW Material: ABS + Plastic + Metal Rotation Direction : Clockwise rotation/counterclockwise rotation operating voltage: 1.5-4 2V DC Motor Position: All direction loadless Speed: 28000±10%RPM Load Speed: 20500±6%RPM 2.5V 76mm-cw Load Current: 2.7±0.25A 2.5V 76mmCW Product Weight: Approx. 5.5g Package Includes: 1 x Terro Motor (Optional) Note: Spare Motor Only, Other Not Included. In order to avoid damage to the machine, please be careful during the disassembly process.