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Used to enlarge an existing hole.
Outside diamond coated length is 25mm with 10mm HEX shank.
Insert into existing hole attached to a battery or power drill, slowly guide and rotate the power drill in an anticlockwise direction.
Use firm pressure against the surface.
Will grind all building materials including porcelain and stone.
Can also be used to grind rebates and irregular shapes.
Revised 3/06/2024