Description: Ideal Replacement: This AV Buffer Spring Set is an ideal replacement for the chain saw AV spring installation, suitable for 350, 351, 370, 371, 390 and 420 models.Easy to Use and Install: The Chain Saw AV Spring is easy to use and install.Wide Application: This AV Spring Buffer Rubber Mount has a wide range of applications across various industries such as agriculture, fishing, livestock farming, aquaculture and forestry.Material: The AV Mount Buffer Spring Set is made of metal material. It features high hardness and good strength making it sturdy for long term use.Size: 4cm/1.57inch; 6.3cm/2.48inch; 7.3cm/2.87inch. Specification: 4cm/1.57inch6.3cm/2.48inch7.3cm/2.87inch Package Includes: 1 AV Buffer Spring Set(3 Piece) Note: Please allow slightly errors 1-2cm differences due to manual measurement.