Material: HSS Drill 4241
Black chamfer drill body material: Steel 45
Dimension
Model：The corresponding bit size
#6: 3mm
#10: 3.5mm
#13: 4mm
#16: 4.5mm
Shank: 6.35mm dia hex shank.

Package included:
4pc (4 different size) Drill Bits
1pc Hex Shank

• Standard hex shank is quick change compatible.
• Drill and countersink for wood screws without changing bits
• Special designed steel counter sleeve countersinks or counter bores pilot hole
• Four piece set includes bits for drilling pilot holes for screw sizes #6, #10, #13 and #16.
• Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew

Standard hex shank is quick change compatible.Didaer