【Double-sided punching】: Double-sided punching ensures efficient operation and precise positioning, ideal for high-volume optical shops. It makes it a versatile tool for a variety of applications. 【Adjustable Groove Depth】: Durable drill bit with precise drilling position adjustment, simple grooving operation, and selectable grooving widths of 0.8mm/1.0mm. 【Optical Lens Grooving Machine】: Ideal equipment for dual-purpose (drilling and sawing) frameless lens processing. Suitable for drilling and grooving CR and PC lenses. 【Reverse Taper Drill Bit】: High-hardness drill bit, wear-resistant and stable, enabling smooth and precise drilling, saving costs and time, and improving safety. 【Wide Range of Applications】: This product is suitable for a variety of applications. It is an eyeglass drilling tool for optical shops, vision care centers, optometry training centers, and eye hospitals.