hw boring bits with countersink
R159

• Sold complete with HS drill bit (item R210)
• With a special collar made in Delrin for low friction operations and easy depth adjustment
• No marking and scratches!
• Quick change 1/4" hex shank (6,35mm)
• Large side openings for chip clearance

Thanks to our new solution, it is now possible to adjust drilling depth and make seats for flush screws in an easy and quick manner, simply by using a power portable drill, without risk of marking or scratching wood. You can find below the directions of use. NB: It is very important to drill a pilot hole before inserting the screw, in order to obtain excellent results, both aesthetic and long-lasting performance.

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