" 6 Different Sizes: For drilling holes approximately 22, 28, 35, 44, 68 and 73mm (0.9, 1.1, 1.4, 1.7, 2.7, 2.9 inches) in diameter. Easy to Use: strong> This is an upgrade design, a simple screw-on style design, instead of the old-fashioned assembly method. Effective: The drill bits are made of high quality alloy with coated metal particles, practical and simple. Application: Ideal for cutting holes such as tiles, ceramics, bricks, sheet metal Plasterboard, concrete, etc. Suitable for hand drills, bench drills, vertical drills, etc. Suitable for: air drills Item Descriptions: Easy to use Usage: This is an upgrade design. Level, a simple bolt design, instead of the manual assembly method. the old way. Efficient: The drill bits are made of high quality alloy with coated metal particles, practical and simple. Package Includes: 6x jigsaw drill holes of different sizes 1x large chuck 1x small chuck 1x hexagonal wrench 1x storage box 6 Different Sizes: Used for drilling holes with a