[Premium Quality Materials] Our 37mm piston rings bearing oil seal kit is crafted from high-grade metal ensuring hardness strength and durability. each component is 100% and rigorously tested to meet industry standards. perfect for demanding applications in forestry and more. [Versatile Applications] Suitable for a wide range of uses including fishery animal husbandry aquaculture and forestry. this kit is a must-have for anyone relying on their chainsaw for heavy-duty tasks. its robust design ensures long-lasting performance in various environments. [Perfect Replacement Solution] Designed as an ideal replacement for broken or worn-out parts in grass cutters and lawn mowers. this kit includes everything you need to restore your stihl 017 ms170 chainsaw to optimal performance. refer to part numbers 11300302000 1130 030 2000 9639 003 1585 for compatibility. [Comprehensive Package] Includes 1 piston 1 pin 2 piston rings 2 circlips 2 crank bearings and 2 oil seals. the 37mm piston size with an 8mm stitch provides a perfect fit. note slight variations in color and size may occur due to manual measurement and monitor display differences. [Easy Installation] The kit is user-friendly with a straightforward installation process. each component is precision-engineered to fit seamlessly into your 017 ms170 chainsaw. no specialized tools required making it a hassle-free solution for both professionals and enthusiasts., Manufacturer: Jelquix