Precision-built for lasting performance: This self-locking gear set with reduction gearing is manufactured with fine workmanship from high-quality materials to give your brushless lithium electric drill durable, long-lasting operation. Improves efficiency and control: Precisely sized and carefully finished components ensure smooth power transfer and consistent meshing, so tasks run more smoothly and require less repeated adjustment. Built for heavy use: Designed with durability in mind, the gear set resists wear under demanding conditions and maintains reliable performance even in tougher applications. Key attributes Function: Self-locking gear set with reduction gearing for secure engagement and increased torque where needed. Compatibility: Made for use in brushless lithium electric drills and compatible gear housings; intended as a direct replacement or upgrade for matching gearbox assemblies. Construction: Precision-machined components and premium materials for wear resistance and stable operation. Performance: Stable torque transfer, consistent results, and long service life under regular or heavy workloads. Typical applications Workshop repairs and maintenance: Replace worn internal gears to restore drill torque and reliability for daily shop use. Construction and on-site work: Withstand heavy-duty drilling and fastening tasks where durability and consistent performance matter. DIY tool upgrades: Improve control and longevity of compatible brushless lithium drills used for home improvement projects. What you get A precision-engineered gear set that improves the reliability and operational life of compatible brushless lithium electric drills, delivering smoother power transfer, improved efficiency, and robust performance in demanding conditions.