Parts List: 14 x Twist Drill Bits Highlight description: Product Material: Made of tungsten steel alloy, the structure is sturdy and can be used repeatedly, and it can quickly drill clean and precise holes, saving you time and energy in construction or renovation projects Multiple Sizes: The multi size drill bit kit covers a wide range of sizes and works with materials ranging from granite and quartz to tile and acrylic, ensuring you have the right drill bit for every task Features: Our twist drill bits are designed with incisive teeth, and the head is multi tooth design, which makes the drilling more stable and helps you complete the drilling work efficiently Compatibility: Featuring a unique cutting thread design that delivers clean, smooth threads with precision, reducing the need for extra tools or steps, and is compatible with most common drills, making it ideal for DIY enthusiasts and professional craftsmen alike Wide Applications: Twist drill bits are ideal for dry drilling through fragile materials such as tiles, porcelain, bathroom tiles, marble, wood, glass, granite, stone, brick, etc., reducing the risk of cracks or damage Detailed description: Description: Our twist drill bit is made of tungsten steel alloy material, which is sturdy and wear resistant for repeated use. It can be used for tiles, porcelain, bathroom tiles, marble, wood, glass, granite, stone, brick and more. Key Feature: Efficient: Designed with twist and incisive teeth, this drill bit helps drill clean and precise hole efficiently, improving your drilling work. Specification: Product Name: Twist Drill Bits Material: Alloy Color: Light Gold Size: Style 12: 12.5cm/4.92 inch Style 10: 12cm/4.72 inch Style 8: 11.5cm/4.53 inch Style 6: 10cm/3.94 inch Style 5: 10cm/3.94 inch Style 4: 10cm/3.94 inch Style 3: 9cm/3.54 inch Note: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement. Multiple Sizes: The multi size drill bit kit covers a wide range of sizes and works with materials ranging from granite and quartz to tile and acrylic, ensuring you have the right drill bit for every task Product Material: Made of tungsten steel alloy, the structure is sturdy and can be used repeatedly, and it can quickly drill clean and precise holes, saving you time and energy in construction or renovation projects Features: Our twist drill bits are designed with incisive teeth, and the head is multi tooth design, which makes the drilling more stable and helps you complete the drilling work efficiently Compatibility: Featuring a unique cutting thread design that delivers clean, smooth threads with precision, reducing the need for extra tools or steps, and is compatible with most common drills, making it ideal for DIY enthusiasts and professional craftsmen alike Wide Applications: Twist drill bits are ideal for dry drilling through fragile materials such as tiles, porcelain, bathroom tiles, marble, wood, glass, granite, stone, brick, etc., reducing the risk of cracks or damage