This set of coupling gears and wrench is a good solution for maintaining your . Instead of buying a new one, you can simply replace the damaged parts with this set. The coupler and wrench are easy to install, making it a simple process. Features -Color:Black -Material:PP, iron -Size:3.70X3.70X1.50cm/1.45X1.45X0.59in(Coupler) -Size:11.50X2.50X0.20cm/4.52X0.98X0.08in(Spanner) -A simple solution for maintaining your without having to purchase a new one. -This product includes coupling gears and wrench, making it easy to install and use. -With the included wrench, replacing damaged parts is simple and can be done quickly. -Adopts precision production to enhances the stable characteristics and high reliability. -By using this product, you can extend the lifespan of your and more in . Package list: 4 x coupler 1 x spanner