Description of π§ Aiyun Tile Glass Drill Set: 7 Piece, 3-12mm High-Quality Tools
[Upgrade Design Tip] Easy positioning of Cross Spear Head. Precision ground spear tip reduces bit skating and walking. [Material] Premium carbide YG6X with a reinforced head prevents bit cracking and provides a longer life. Classic Carbon Steel Material for fast cutting against tough wood material. [Quick Change] 1/4 inch Hex Shank fits into all power tools more easily and securely, especially for locking into quick change chuck. [U-type Slot Design] Allows for fast penetration and evacuation of debris as you work. [Application] It is suitable for Ceramic, Tile, Mirror, Wood, Porcelain, Brick Wall, Glass, etc. Please try to keep the drill vertical and use WATER or COOLANT for lubrication when drilling.