The Pololu 250:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft is a compact, high-power brushed DC motor. It operates at 6V and comes with durable, long-lasting carbon brushes. The gearmotor is fitted with a 248.98:1 metal gearbox for optimal performance. It has a cross-section of 10mm x 12mm, and the D-shaped gearbox output shaft is 9mm long and 3mm in diameter. This model also features an extended motor shaft measuring 4.5mm x 1mm. Key specifications of this gearmotor include a voltage of 6V, no-load performance of 130 RPM and 150 mA, and stall extrapolation of 3.2 kg⋅cm and 1.5 A. These specifications make it an excellent choice for a wide range of applications. This gearmotor is perfect for robotics applications, where precise movement and control are required. Its high-power output and compact size make it suitable for small robots or other systems that require intricate movements. The extended motor shaft provides more flexibility in attaching wheels, pulleys, or other components. The unique feature of this gearmotor is its long-life carbon brushes, which offer longer operational life compared to standard brushes. This results in less downtime for maintenance and more time for operation. The robust 248.98:1 metal gearbox enhances the performance by providing high torque and speed reduction, ideal for applications that require high precision and reliability. The Pololu 250:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft is a reliable and efficient solution for your robotics or automation projects. Its high power, combined with its compact size and extended shaft, make it a versatile choice for a variety of applications.