Ergonomic and Anti-Slip Handle: The automatic oiling features an ergonomically designed aluminum alloy body that fits perfectly in your palm, reducing hand fatigue during extended use. Detachable and Replaceable Metal Cutting Head: Oil feed glass cutter is equipped with a durable alloy tapping head. Unlike disposable cutters, the head can be easily replaced when worn out. Automatic Oiling System: Built-in oil filler pipe ensures the cutter head is lubricated automatically during operation. Versatile Application: Designed for high flatness and durability, this glass cutter tool is ideal for cutting various materials including ordinary glass and ceramic tiles. Important Safety: Designed for flat surface operation only. This tool is NOT suitable for tempered glass, vitrified tiles, marble, quartz, or vertical window wall operations.