SaferCCTV Replace 51mm Cylinder Head Piston Assembly Kit Set for Husqvarna K750 K760 Concrete Saw Cut Off Saw 1. Unique service can make you rest assured to buy--(1)60-days money-back guarantee. (2) Professional sellers, and professional guidance, have more cylinder to choose . (3)Provide professional use tutorials. (4) Often give away free tool products (because we clean stock). Please contact us if you need any of the above services 2. Fits Husqvaran/Partner model K750, K760 -51mm 3. Replacement Part#:506-38-61-71 / 506-38-61-71 / 520-75-73-02 / 520-75-73-02 4. Package include: 1 x Cylinder head,1 x piston,1 x piston pin,1 x piston ring set, 2 x circlips 5. This is non original aftermarket parts, please check the pictures for compatibility before buy it