woodworking multi-boring machine threaded wood drill
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1.drill bits for multi-boring machine
2.used on woodworking drilling machine
3. right and left pattern
4.woodworking drill
It is drill bits for woodworking drill machine and other machines that can use it.
It has many diameters and sizes for your choice. The derection is left and right. You can choose the drill bits accorking to the spiral derection of your machines.