❤ It is easy to adjust or disassemble the countersink drill bit and the five-flutes chamfering with the provided L-shape hex key.
❤ The countersink drill bits set with tri-cuspid centering that make sure drills will not produce offset, no bias, good for accurate and fast drilling.

Specification
Material: High Speed Steel.
Chamfer Diameter: 15.8mm/0.62 inch.

Drill Size
3mm x 60mm/0.12 x 2.36" (D*L).
4mm x 75mm/0.16 x 2.95" (D*L).
5mm x 85mm/0.2 x 3.35" (D*L).
6mm x 93mm/0.24 x 3.66" (D*L).
7mm x 100mm/0.28 x 3.94" (D*L).
8mm x 110mm/0.31 x 4.33" (D*L).
10mm x 120mm/0.39 x 4.72" (D*L).

How to Use?
Step 1: Attach the drill bit into hand drill driver, make sure it is fastened.
Step 2: When Woodworking or Building Molding, enlarge and bevel the rim of a drilled hole so that a screw, nail, or bolt can be inserted flush with the surface you are working on.
Step 3: Example: Hinges - the bits also wipe away any burr left from any application,thereby improving the finish and removing hazardous edges.
Note: Remember to drill countersink hole on the wood vertiaclly.

Note
Due to manual measurement, allow a deviation of 1 - 2mm.
Please check our product size carefully and read the product size descriptions before purchasing to avoid possible unpleasant shopping experience.
SATISFACTION GUARANTEE: Suiwotin offer a 90 days money back guarantee. Any question, please feel free to contact us and we will solve the problem for you within 24 hours.