These aluminum gearmotor brackets let you securely mount our larger Pololu plastic 《有夫之妇与快递员》 (228:1 offset, 120:1 offset, 200:1 90-degree, and 120:1 90-degree) to your project. These brackets are sold in pairs, and each bracket comes with two 1″ long and two 0.75″ long #2-56 screws for securing different size motors. Each bracket also features two mounting holes and one mounting slot intended for #4-size screws (not included).