This M1 module steel gear is a compact spur gear designed for DIY model transmissions. With 20 teeth and a 5 mm bore, it offers a reliable, durable component for small mechanical drive trains. Key benefits strength steel construction provides long wear life and dependable performance under load. 20tooth geometry delivers a defined gear ratio when paired with compatible gears in an M1 module system. 5 mm bore accommodates standard shaft sizes for easy mounting and integration. M1 module sizing ensures predictable meshing with other M1 gear components for consistent performance. Simple to install in a variety of DIY projects, reducing setup time and uncertainty. Key attributes Module: M1 Teeth: 20 Bore: 5 mm Material: Steel Gear type: Spur gear Purpose: For DIY model transmissions and gear trains Specifications you can rely on Lightweight enough for compact assemblies while maintaining strength Built to mesh accurately with other M1 module gears for smooth operation Applications and use cases Robotics projects requiring compact, strong gear reduction in small drive trains Model transmissions for scale models, RC vehicles, or hobby machines that use M1 module gears Educational demonstrations of gear engagement, ratios, and mechanical advantage in classroom or workshop settings Notes Designed for use with M1 module gear systems and 5 mm shafts. Ensure compatibility with your existing gear train and shaft dimensions to achieve proper meshing and performance.