Notice:
For the first use, it is recommended to remove the glass from the window and put it on the cardboard box for operation. Never use the glass on the hard floor, which will damage the glass easily.

Using Step:
Step 1: circle the glass first.
Step 2: after drawing the circle, in the back of the glass along the cutting line for tapping, the Strength of their own grasp, percussion cracks appear. (a first round, after a line drawing, mainly in order to not when tapping will break glass box.)
Step 3: in the front of the glass, draw a little inside the circle, easy to knock glass.
Step 4: knock on the back of the glass along the line of the small to crack.
Step 5: knock the small in the circle slowly by knocking on the small .

Package Includes:
1 x Glass Compasses Cutter

Note:
1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.
2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.