Countersink Reamer Round Shank Chamfer Drill Bit Set Quick Change

Specifications:  Color: Gold + Black;  Material: Carbon Steel + High Speed Steel;  Type :  A : 6# , 8# , 10# , 12# Chamfer Drill;  B : 6# , 8# , 10# , 12# , 14# Chamfer Drill;  Diameter:  6#: 2.38mm;  8#: 2.78mm;  10#: 3.175mm;  12#: 3.56mm;  14#: 3.97mm;     Features:  1. Special designed steel counter sleeve countersinks or counter bores punch hole;  2. Adjustable counter sleeve depth with a wrench;  3. Drill and countersink for wood screws without changing bits;  4. Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew;  5. Countersink or counter bore clean, smooth holes for screws and fasteners;  6. For use in wood and plastic.     Notice:   1. Please allow a bit error due to manual measurement. please make sure you do not mind before you bid;  2. The color may have different as the difference display, pls understand.     Package Included: (Optional)  1 Set x 6# , 8# , 10# , 12# Chamfer Drill;  1 Set x 6# , 8# , 10# , 12# , 14# Ch