Features 1、The kit contains accessories such as cylinder, piston, piston rings and pin, which suitable for Husqvarna K960 K970 544935603. 2、Made of lightweight high silicon aluminum alloy with strong thermal diffusion ability and good thermal fit for piston. 3、The cylinder diameter is 47mm, with standard size and high matching degree, easy to replace. 4、One‑piece molding design increases the strength of the machine body and improves wear resistance and corrosion resistance. 5、With strong gas compression capacity, provides surging power, and is not easy to get stuck in use. Specification Item Type: Cylinder Piston Kit Material: High silicon aluminum alloy Cylinder Diameter: Approx. 47mm / 1.9in Package List 1 x Cylinder 1 x Piston 2 x Piston Clips 2 x Piston Rings 1 x Piston Pin