RL-066C RELIFE Glass Back Cover Blasting Pen, Which is A Specialized Tool For Mobile Phone Repair. Function: This tool is designed to safely break the adhesive seal and remove the glass back covers and camera lens modules from smartphones without damaging internal components. Material: It features a high-quality, hand-polished tungsten steel tip for durability and precision. Adjustable Impact Force: The rear cap assembly can be rotated to adjust the impact force, allowing technicians to tailor the force to different phone models (e.g., iPhone 8 to 16 Pro Max, Huawei P/Mate series). Ergonomics & Safety: The pen has a non-slip, sandblasted surface for a comfortable grip and includes a safety cover to prevent accidental injury. Usage: The user positions the pen perpendicularly to the glass back cover and presses gently to deliver a controlled impact that loosens the adhesive, making the glass easier to remove.