Pololu's 298:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft is a compact, high-power brushed DC motor that operates at 6V. The gearmotor is equipped with durable carbon brushes, ensuring a long lifespan. The metal gearbox boasts a 297.92:1 ratio, providing excellent torque and speed reduction capabilities. The gearmotor's cross-section measures 10 x 12 mm, making it perfect for applications where space is at a premium. The D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. An additional feature of this model is a 4.5 x 1 mm extended motor shaft. Key specifications for this gearmotor include a voltage requirement of 6V, a no-load performance of 110 RPM and 150 mA, and a stall extrapolation of 3.4 kg⋅cm and 1.5 A. These specifications make it an ideal choice for a variety of applications that require high torque and low speed. This gearmotor can be used in a wide range of applications. For example, it is perfect for use in robotics, where it can provide the power needed to move small robotic arms or wheels. It's also suitable for use in automated systems, where it can be used to drive conveyor belts or other machinery. The extended motor shaft provides additional flexibility, making it easier to connect the gearmotor to other components. The gearmotor's compact size and high power output make it a versatile choice for a wide range of applications. The long-life carbon brushes and metal gearbox ensure durability and reliability, making it a cost-effective choice for both hobbyists and professionals alike. The extended motor shaft provides added convenience, making it easier to integrate the gearmotor into various systems. Overall, Pololu's 298:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft offers a powerful, reliable, and versatile solution for a variety of applications.