Description:Feature - 100% Brand new and .Provides a convenient choice for your DIY projectAppliation - Plastic Crown Gears suit for science DIY project such as rc model car, model electirc robot and windmill, education such as displaying how gear rates work, and any other family small motor DIY project.More Choose - Our store have the most complete specs gears shown in the following description, which can meet your DIY needs.Good accessories for Vehicle or remote control
