Valve Seat Pilots & Stone Holder Kit, 0.385" Top, 5 Pcs, 4.5-7mm

Key features

• Precision Valve Guide Alignment Setup: Centers grinding stones inside valve guides for accurate seat contact and concentric alignment during valve seat grinding operations in cylinder head repair setups. Used in engine rebuilding environments to support proper seat formation depending on guide condition, fitment and grinding setup
• 5 Size Small Diameter Coverage Range: Includes 4.5mm, 5mm, 5.5mm, 6mm and 7mm sizes for valve guide fitment across small engine, motorcycle and automotive cylinder head applications during grinding and refacing work. Used across different guide sizes depending on fitment, wear condition and operational setup in workshop environments.
• 0.385” Top Sioux Style Compatibility: Fits standard 0.385 top stone holders for mounting and positioning during valve seat grinding operations across workshop setups. Used with Sioux, Neway and Kwik Way systems where applicable for stable alignment and concentric positioning depending on holder fitment and grinding conditions
• 11/16” Thread Stone Holder with Star Drive Connection: Connects grinding stones to drive system during operation and supports stable mounting under repeated workshop use. Includes stone holder with standard 11/16 thread and star drive ball mechanism used in valve seat grinding setups for controlled rotation and operation stability.
• Multi System Compatibility & Integration Support: Fits into standard grinding setups used across workshop environments and multiple machine types. Used with Sioux, Neway and Kwik Way compatible systems where applicable, supporting integration across valve seat grinding, refacing and engine rebuild applications.

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