* COUNTERSINK DRILL BIT SET - Also Countersink For Woodworking - Included 5 Pieces #4(7/64"), #6(9/64"), #8(11/64"), #10(3/16") and #12(7/32"), the Tapered Drill Bits are manufactured with High Speed Steel M2 which provides long lasting sharpening and very fast drilling and the Four Flute Countersink Cutters made with Carbon Steel #45 and Black Oxide coat to prevent rusting,
set comes with 2 Stop Collar, 1 Hex Wrench.
* ADJUSTABLE COUNTERSINK - Also Countersink Bits For Wood - The Adjustable Stop Collar allows you to adjust the Counterbores depth and Adjustable Cutters can be adjusted for many screws sizes.
The Quick Change 1/4" Shank is Universal size, Compatible with all 1/4" Quick Change Chucks.
* QUALITY-Countersink Drills are made by in High Speed Steel M2 (6542 grade) Drill Bit and Carbon Steel #45 Sink Cutters coated with Black Oxide anti-corrosion .
