Specification Brand : Yoursme BulletPoint1 : Perfectly Fitment: Used on Annovi Reverberi RK, RKA, RKV, XRCA, XRV, XRCV series pressure washer pumps (also known as AR pumps.) (Please check parts size before ordering.) BulletPoint2 : Directly Replacement: Directly replaces manufacturers part AR2546 BulletPoint3 : Package Included: 3 x Ceramic Pistons; 3 x Copper Washers; 3 x Spacers; 3 x O-Rings; 3 x Piston Nuts; 3 x Backup Rings BulletPoint4 : Ceramic Pistons Dimensions: 18mm OD, 11mm ID, 40mm length BulletPoint5 : SATISFACTION GUARANTEE: Yoursme aims to provide the best service for our customer and built to provide exceptional levels of durability, if you're not 100% satisfied with our item, simply return it for a full refund in 30 days. We support 12 months’ Warranty. If you have any problems about our products, please feel free to contact us. ItemName : Yoursme AR2546 Pump Piston Kit Ceramic Plunger Repair Kit 18mm for Annovi Reverberi RK, RKA, RKV, XRCA, XRV, XRCV Pumps ItemPackageDimensions_Height : 9.9 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 9.1 centimeters ItemTypeKeyword : pressure-washer-accessories ItemTypeName : Pressure Washer Parts & Accessories Manufacturer : Yoursme Material : Ceramic ModelName : Pssoppbmkgp4re92 ModelNumber : Pssoppbmkgp4re92 PartNumber : Pssoppbmkgp4re92 ProductDescription : 1. Switchable Design: With unique design, the pressure washer dual connector easily switches between high pressure water and foam sprayer functions, providing convenience for use. 2. Versatile Compatibility: Designed with a 1/4in interface, the extension wand dual connector is compatible with common of high pressure washing machines. 3. Adjustable Function Fully functional regulator of this double tip switch attachment allows for self adjustment of foam concentration and water pressure as needed. 4. Convenient Installation: The double tip attachment enables quick and easy installation and disassembly, effort saving and convenient, no complicated tools required. 5. Stainless Steel Construction: Made of high strength stainless steel materials, this foam cannon dual connector ensures reliability and durability, rust proof and sturdy, providing long lasting reliable performance.