The 5:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft is a compact gearmotor that packs a punch. It's a high-power, 6V brushed DC motor that comes with long-life carbon brushes and a 4.995:1 metal gearbox. Its petite size, with a cross section of 10 x 12 mm, makes it perfect for small-scale projects, while the 9 mm long, 3 mm diameter D-shaped gearbox output shaft ensures a strong and stable connection. This particular model also features a 4.5 x 1 mm extended motor shaft for added versatility.Key specifications of this gearmotor include a voltage of 6V, a no-load performance of 6500 RPM and 170 mA, and a stall extrapolation of 0.09 kg⋅cm (1.3 oz⋅in), 1.5 A. These specifications make it an ideal choice for applications that require both efficiency and power.This gearmotor can be used in a variety of applications. Its small size and powerful performance make it perfect for robotics and automation projects. The extended motor shaft also provides extra reach, making it suitable for projects that require a bit more distance between the motor and the action.The 5:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft is a testament to Pololu's commitment to quality and innovation. Its unique combination of power, size, and durability set it apart in the market, making it a reliable choice for your projects. The long-life carbon brushes ensure a long lifespan, while the metal gearbox provides the strength and durability needed for demanding applications. The extended motor shaft offers additional flexibility, making this gearmotor a versatile and valuable addition to your toolkit.