5pcs HSS Countersink Drill Cone Bit Set #6 #8 #10 #12 #14 Quick Change Hex Shank For Woodworking Screw Carpentry Reamer Chamfer Milling

This 5pcs countersinks are suitable for drilling less than 25HRC hardness workpieces, such as carbon steel, sheet iron, insulation board, PVC board, wood, etc.

Features:
6 piece set includes 5 bits for drilling pilot holes for screw sizes#5 #6,#8,#10 and #12 and 1 hex wrench.
Special designed HSS steel counter sleeve countersinks & counter bores pilot hole.
Adjustable counter sleeve depth with allen wrench.
Adjustable drills length for various length screws simply by loosening and tightening the screw.
Pre-drilling and countersink to drive screws flush with the material surface or deep hole counter boring for driving screw heads below the surface.
Super sharp cutting flute clears chips efficiently and leaves a clean & smooth hole.
Adjustable drill bit length for desired screwed depth, and features a flattened shank for a no-slip countersink connection.

Specifications:
Color: Gold + Black
Material: Carbon Steel + High Speed Steel
Hardness: HRC 60
Countersink Sizes: #6, #8, #10, #12, #14
Shank: 1/4" Hex Shank
Quantity: 5 pcs Drill Bits + 1 pc Small Wrench
Chamfer Diameter: 10mm / 0.39"
Countersink Diameter:
6#   2.38mm / 0.09"       
8#   2.78mm / 0.11"     
10#  3.175mm / 0.125"      
12#  3.56mm / 0.14"    
14#  3.97mm / 0.16"
Item Weight: Approx. 58.5g / 2.06oz
Package Size: Approx. 7 * 5 * 1.1cm / 2.78 * 1.97 * 0.43in
Package Weight: Approx. 60g / 2.12oz

Package List:
5 * Countersink Drill Bits 
1 * Hex Wrench