Featuring a robust construction, this valve lapping tool is built to withstand heavy-duty use. The suction plates provide a firm hold, allowing for precise and controlled grinding. Ideal for car and motorcycle engines, this tool helps maintain valve integrity and performance, ensuring your engine runs smoothly and efficiently. Features -Color:Yellow -Material:Rubber -Size:3.40X3.40X2.70cm/1.34X1.34X1.06in -Adapter inner diameter: 6.5 mm -Adapter outer diameter: 11.6 mm -Valve grinding: employs state of the for swift and efficient engine valve grinding -Effective valve repair: successfully addresses wear issues in motorcycle and car engine valves, extending their operational life -Wide applicability: suitable for use in car and motorcycle repair settings, offering practical and versatile -Precision grinding: maintains accurate control over grinding force, ensuring smooth valve surfaces and improved engine performance - materials: built with wear resistant materials, ensuring durability and consistent performance over time Package list: 4 x valve grinder suction cups