81piece Mini Micro Plastic Gear Set 0.5 Modulus for Model Making and Prototyping Key benefits Readytouse assortment: 81 pieces covering multiple small gear types so you can prototype gear trains and rack and pinion systems without sourcing individual parts. Precise meshing: 0.5 modulus teeth ensure consistent engagement with other 0.5 modulus components, making it easy to test gear ratios and reductions. Lightweight and easy to handle: Plastic construction keeps parts light for small, lowload mechanisms and reduces wear on micro motors and shafts. Saves time in design and testing: A single kit gives you the varieties needed to iterate on reductions, speed changes, and directional transfers quickly. Main features Piece count: 81 assorted micro gear elements designed for model making and educational projects. Tooth specification: 0.5 modulus for accurate, repeatable meshing with compatible parts. Material: durable plastic suited to smallscale mechanical assemblies and lowtorque applications. Function: suitable for reduction gear boxes, rack and pinion drives, and small transmission assemblies. Compatibility: ideal for hobby models, DIY robotics, classroom experiments, micro motor gearboxes, and scale mechanisms that use 0.5 modulus gears. Practical use scenarios Educational lab: Demonstrate gear ratios and mechanical advantage by building reduction gearboxes and comparing input and output speeds using the 0.5 modulus gears. DIY robotics and micro vehicles: Create compact reduction stages or rack and pinion steering linkages for lightweight robots and scale RC models. Prototype and : Quickly assemble or small gear trains when testing micro motor performance, gearbox concepts, or model mechanisms. Why choose this set Comprehensive assortment for fast prototyping and experimentation. Standardized 0.5 modulus sizing for predictable results when combined with other 0.5 modulus parts. Suitable for makers, students, and modelers who need a reliable collection of micro gears for design, testing, and small mechanical builds. What to consider Designed for low to moderate torque applications common in model making and educational projects. Confirm compatibility with existing shafts and motor fittings in your project before final assembly.