AUTOMOTIVE VALVE LAPPING KIT Finely honed to make the engine power as strong as ever. AUTOMOTIVE VALVE LAPPING KIT [Product Attributes] ● Colors: Grey ● Sizes: 4.93 × 2.78 × 2.78 inch ● Weight: 9.17 oz ● Material: Carbon Steel + Rubber ● Packaging: 1 x Valve Lapping Tool + 5 x Suction Cup Adapters AUTOMOTIVE VALVE LAPPING KIT [Product Feature & Functions] ● Feature: Sturdy, Durable, Resistant for Long Term Use ● Functions: For Correct Surface Irregularities, Eliminate Sub-Surface Damage on New Valves AUTOMOTIVE VALVE LAPPING KIT ● Valve grinding kits, with their superb craftsmanship and precise design, accurately correct surface irregularities, helping to enhance the fit of new valves to valve guides, minimizing their damage and enabling seamless installation. FINELY HONED TO MAKE THE ENGINE POWER AS STRONG AS EVER ● Warm Tips: Before use to the suction cups dipped in water, and the use of the valve needs to be aligned with the force applied to the fixed, do not use the beginning of the faster speed and sudden speed