1. JOERIC JOERIC 5mm Masonry Drill Bit Set 10PC 3/16” Concrete Drill Bit Set- Ceramic Brick Drill Bit Industrial Cemented Carbide Tip YG6X, Hex Shank for Glass, Soft Ceramic Tile, Mirror, Plastic. Special tip design a tungsten carbide material hardens the tips Such a combination reinforces the head against cracking and in turn makes