5pcs Countersink Drill Bit Woodworking Screws Chamfering Wood Hole Drills Bit with Hex Key
Features:
Adjustable Counterbore: Adjustable length of the counterborn,with fixing screw,use the attached hex key remove the screw and adjust the length of the counterbore.
Premium Quality: The drill bit made of tungsten steel alloy,more hardness,provide fast cutting and strong force.
Efficient Work: Smooth counterbore drilled to save you time and labor. The surface of the workpiece will be perfectly embedded with screw cap.
Compatible with: Applied with drilling rig,bench drill,hand drill and charging drill.
Use Tip: Vertical to avoid the drill bit from bending or breaking.
Specifications:
Material: Tungsten Steel Alloy 
Size: 8*2.8, 8*3, 8*3.2, 8*3.5, 8*4mm
Item Weight: 98g /  3.46oz
Package Weight: 107g / 3.77oz
Package Size: 100*50*50mm / 3.94*1.97*1.97in
Package List:
5 * Drill Bit
5 * Hex Key