Description of π© NORTOOLS 3-Piece Glass Shank Drill Set
Titanium plated to protect bits from rusting. Spear-pointed tip design to solve bit wander and bit walking. Applicable to ordinary hand electric drill or bench drill. Sizes: 3/16", 1/4", 5/16", suitable for drilling in ceramics, glass, granite, ceramic tile and brick wall, etc. Note: Must be used with water when drilling holes in brittle materials such as glass, ceramic tile, marble, etc.