Sunnen JHU625 Honing Stone Set 280 Grit Finishing Stones

The Sunnen JHU625 is a premium quality honing stone set designed for precision cylinder finishing on CV-616 and CK-10 honing machines equipped with Sunnen Master Holder Sets. These 280-grit finishing stones deliver superior surface quality for final cylinder bore preparation.

Key Features:

• 280-grit abrasive for fine finishing operations
• Designed for automatic hone applications on CV-616 and CK-10 machines
• Compatible with cylinder diameter range of 4.125" to 5.000" when used with standard hone head
• 2 stones per set, 6 sets per box (12 stones total)
• Premium aluminum oxide construction for consistent performance
• Ideal for final .0015" of cylinder honing on production cast iron blocks

The JHU625 stones are engineered to produce a proper crosshatch pattern and surface finish for optimal ring seating and long-term engine performance. After honing with these stones, cylinders should be brushed for 10-15 strokes to achieve the ideal surface texture. These finishing stones are essential for professional engine builders and machine shops performing precision cylinder work.