100 RPM Dual Shaft BO Motor-Straight gives good torque and rpm at lower operating voltages, which is the biggest advantage of these motors. Small shaft with matching wheels give optimized design for your application or robot. Mounting holes on the body & light weight makes it suitable for in-circuit placement.
The motor is ideal for DIY enthusiasts. This motor set is inexpensive, small, easy to install, and ideally suited for use in a mobile robot car. 
 
Specifications:
Operating Voltage(VDC)
3~12
Shaft Length (mm)
8.5
Shaft Diameter (mm)
(Double D-type) 5.5
No Load Current
40-180mA.
Rated Speed(After Reduction)
150 RPM
Rated Torque
0.35 Kgcm
Weight (gm)
30
Dimensions in mm (LxWxH)
70 x 23 x 19
Gearbox Shape
Straight (Dual Shaft)