CQRobot 30:1 Metal DC Geared-Down Motor 37Dx67.5L mm 6V/12V, with 64 CPR Encoder and Bracket. 6V-7W-115RPM-7.5 kg.cm(104 oz.in), 12V-12W-330RPM-14 kg.cm(194 oz.in), D-Shaped Output Shaft 16mm.
 
Product Features
  

         
6V or 12V 30:1 Metal DC Geared-Down Motor 37Dx67.5L mm, with 64 CPR Encoder and Metal Mounting Bracket Kit, D-shaped Output Shaft 6mm Diameter and Long 16mm;
         
Max Power: @ 6V: 7 W, @ 12V: 12 W;
         
No-load Speed: @ 6V: 115 RPM, @ 12V: 330 RPM;
         
Stall Torque: @ 6V: 7.5 kg.cm (104 oz.in), @ 12V: 14 kg.cm (194 oz.in);
         
for Projects Such as Robots, Measuring Devices, Medical Equipment, Smart Balance Car, RC Car Model, Smart Home Appliance, Custom Servo, DIY Engine Toy. Compatible with Arduino Motherboards.