At the mouth of the Auger shaft wind guns, guns, and then press the drill rotate wearing next to the Jack Nut, then shot Jack Nut into position hole size Ø 8 mm. 8-hole on a Vertical Duct.
The wind mouth drill gun Then press the gun to rotate the drill bit wear with Jack Nut Jack Nut, then shot into the drill hole Ø 8 mm. Hole number 8 on the workpiece Duct Vertical.
At the mouth of the wind gun drill shaft, and then press the gun drill rotating wear next to Jack Nut and shoot Jack Nut along with the position hole size, education 8 mm. The 8 pores. On the target Duct Vertical.