1、High quality and reliable gasoline generator piston assembly kit, practical accessories parts. 2、The installation is simple and easy to use, the damaged or broken one can be easily replaced. 3、Wide application, perfect for agriculture, fishery, animal husbandry, aquaculture, forestry, etc. 4、Made of high quality aluminum material, high hardness and good strength, durable for long time use. 5、The piston assembly features professional manufacturing, stable performance and high reliability. 1 x Piston5 x Piston Ring2 x Clamp Spring1 x Pin Condition: 100% Brand NewItem Type: Piston AssemblyMaterial: AluminumFitment: Fit for 188F/GX390Piston Small Hole Diameter: Approx. 2cm / 0.8inProduct Size: Approx. 8.8 x 6.7 cm / 3.5 x 2.6 inWeight: Approx. 439g / 15.5oz