- Rotate the E-File Pen Twist Lock fully to the left until you hear a 'click' to unlock the chuck.
- Insert your chosen Drill Bit, leaving a small gap between the Drill Bit and the chuck so it can rotate smoothly.
- Rotate the Twist Lock fully to the right to secure it in place.
- Turn on your E-File Pen and start on Level 1, increasing speed only as your confidence and control improve. Only use on gel manicures that include Builder Gel.
For more detailed guidance, view our E-File Pen User Guide or watch our E-File & Drill Bits tutorials on YouTube.









