1GOOD COMPATIBILITY Replaceable cylinder piston assembly parts, fit for SHINDAIWA RC45 BP45 / INTL GP450 DYB454 B45 RC45 lawn mower and 41.5CC chain saw. 2PART NUMBERS The replacement part numbers are 2002112111, 7019812110, effectively improve the working efficiency of the machine and extend the service life. 3LONG LASTING DURABILITY Made of selected high quality iron and aluminum materials, strong and durable, wear resistant and corrosion resistant. 4SOPHISTICATED DESIGN Professional manufacturing, superb craftsmanship and high accuracy help to provide the best performance. 5EASY ASSEMBLY Easy to install and disassemble, it is an excellent replacement for old or damaged parts, perfectly matching your machine. Item Type: Cylinder Piston Set Material: Iron, Aluminum Weight: Approx. 400g / 14.1oz Cylinder Bottom Diameter: Approx. 40mm / 1.6in Replacement Part Numbers: 2002112111, 7019812110 Fitment: Fit for SHINDAIWA B45 RC45 BP45 / INTL GP450 DYB454 lawn mower and more 41.5CC chain saws 1 x Cylinder 6 x Piston Assembly Set 1. Please allow 0& 8209;1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.