High-strength PC material, high permeability, not brittle, effectively stabilizing the overall structure. Versatile Use: This glass bottle cutter kit is designed for cutting round bottles, especially for wine and beer bottles. Unless the bottle is embossed, you can easily cut any bottle you want (over 3 cm in diameter) with this versatile glass cutter. The cutting wheel has high hardness and fast cutting performance, which perfectly meets your needs. Easy to use and durable: Place the bottle on the holder, apply constant medium pressure, and rotate the glass bottle. Slowly alternately rinse the cutting surface with boiling water and cold water three times, each time for more than 40 seconds. Then the glass bottle will be automatically separated. The smooth cutting knife won't hurt your hand, but will cut the bottle perfectly. This highly durable metal bottle cutter is stronger than a plastic bottle cutter.