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Piloted Core Drills for Winona

Winona core drills have a .468" Round Drive with a Flat

Piloted valve guide core drills are manufactured from High Speed Steel and intended to be used in a Valve Guide and Seat Machine, Bridgeport style machine, or bed mill.

Valve guide core drills are designed to be used with valve guide core reamers to achieve a final size finished size for press fit guide installation. For more information on the corresponding valve guide core reamers, click on the item number below:
Item # Pilot O.D. Final O.D. Quantity Price
70540.3120.468$106.06
70550.3430.468$106.06
70560.3750.468$106.06
70610.3430.531$106.06
70620.3750.531$106.06
70590.4370.594$106.06
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