Item Type: Chainsaw Flywheel_x000D_ Product Material: Aluminum Alloy_x000D_ Product Size: Approx.10 x 10 x 3.5cm / 3.9 x 3.9 x 1.4in_x000D_ For STIHL: FS120 FS200 FS250_x000D_ Replacement OEM Part Number: 4134 400 1200_x000D_ Weight: Approx.300g / 10.6oz 1Material: The product is made of high quality aluminum alloy material, which is durable, wear resistant and has a long service life. 2Professional: Exquisite craftsmanship and high accuracy help deliver good performance. 3Accessories: The perfect accessories for garden tools, which can effectively extend the life of the machine. 4Replacement: Can be perfectly matched to your machine, ideal for replacing lost or damaged parts. 5Applicability: Stable performance, suitable for STIHL FS120 FS200 FS250, replace OEM part number 4134 400 1200.1 x Chainsaw Flywheel