Purpose and key benefits Precision and smooth drilling for both enthusiasts and professionals — designed to deliver consistent, clean holes with minimal chipping. Durable cutting performance thanks to a thickened abrasive layer and brazing technology that keeps the cutting edge effective longer. Versatile four-size punch tool set covers a range of hole diameters so you can handle multiple tasks without changing core equipment. Performance and construction Cutting segments use a reinforced grit layer that improves material removal and resists wear under repeated use. Brazed joint construction secures the abrasive to the tool body for stable, efficient cutting. Made from high-quality alloy steel with a rust-resistant surface finish for long service life and low maintenance. Compatibility and function Suitable for drilling holes in glass, ceramic tile, marble and glazed brick. Functions as a multifunctional punch/drill set for precise hole creation in hard, brittle surfaces. Practical use scenarios Bathroom installation: drilling precise holes in ceramic tile for faucets, shower fittings or mounting hardware without cracking surrounding tiles. Tile and stone work: creating clean openings in marble or glazed tile for decorative inlays, fixtures, or recessed lighting. Masonry and renovation: punching holes through glazed brick for running cables, anchors, or pipe penetrations during remodeling. Why customers should choose this set Reduces rework and material damage by producing smooth, accurate holes in brittle materials. Four sizes provide on‑site flexibility for common drilling needs. Robust alloy-steel construction and corrosion-resistant finish provide dependable performance across multiple projects.