Its form Good quality products factory.

Bi-metal strip is made from laser welding machine and vacuum heat treatment,with higher hardness,cutting strength,and stronger wear resistance as well as longer life.

The cutter head comes from a famous Swedish factory and is made with German automatic welding machines, which have a longer service life

• Adult use only and always wear appropriate safety gear when using.
• Due to manual measurement, please allow 1-2mm difference, thanks!
• Our digital imaHow to Cut Successfully

1. Install the pilot hole and the hole saw. 2. Holding the drill straight to cutting surface and drill as clockwise rotation. 3. When starting drilling, cutting at a slow speed and holding steady pressure. 4. Then the hole saw cut hole in no timeges are as accurate as possible. Because of the differentce between the display and the light, the color is slightly differen

MOHS HARDNESS NOT UP TO 6

you can use this hole saw to make holes at an angle.

Roof drilling,High drilling,Distant drilling,Deep drilling.

Tool-free,fast,easy to engage and disengage.

Save-time,more than 2 time than traditional hole saw mandrel