Teaching tool:these plastic gears are great for teaching about mechanics and engineering,pulley gears,Plastic Model Accessories
: this pulley gear is a trustworthy and option for use in scientific and education settings,plastic pulley wheel,mute pulley
craftsmanship: with the great workmanship, it can be used to repair and fix your handicraft or . they can be the great DIY accessories,diy model wheel,Pulley for RC Car
Outstanding workmanship: reasonable design, stable and practical, will bring you a using experience,pulley for diy,1.95mm Hole Plastic Belt Pulley
Wear-resistant: these replaceable gears are stronger and wear-resistant, and can ensure long-term use,diy parts,Multipurpose pulley