This is an adjustable carbide countersink. The sides are tapered to fit a standard 82 degree screwhead. It will accept drills from 3/32" to 3/16" for wood screws #4 to #10. A reallly nice versatile tool. If you would like to insure your purchase please let me know when I quote shipping. I will be happy to do this for you. Shipping on this item is free via USPS or UPS. I do combine shipping wherever possible. I do ship internationally. Just email me and I will quote shipping to your country.
