Model:Metal Double Gear 10 Teeth 0.4 Module + 22 Teeth 0.4 Module Wheel Bore Through 2mm Axle Loosely Matched Large Wheel Diameter 9.7mm Thick 2mm Small Wheel Diameter 5mm Thick 4mm Package Included:5PCS

Model:Metal Double Gear 10 Teeth 0.4 Module + 22 Teeth 0.4 Module
Wheel Bore Through 2mm Axle Loosely Matched

Large Wheel Diameter 9.7mm Thick 2mm
Small Wheel Diameter 5mm Thick 4mm

Package Included:5PCS