[DETAIL] Specification: Name: Fried Dough Twists Drill Material: High speed steel Color: As shown in the picture Size: 4.2mm-13mm Feature: 1. Using high-speed steel substrate, it has high wear resistance and red hardness High speed drilling performance, high temperature resistance, and anti burning drilling 2. High strength and large capacity spiral chip groove, integrated spiral forming, good universality and durability 3. The diameter design of the large blade can greatly improve the stability and vibration resistance of the cutting tool 4. Nano coated cutting edges effectively reduce the number of tool changes, saving time and effort, and increasing efficiency 5. Standard straight handle design, strong compatibility, tight bite, high load-bearing capacity, and not easy to break. Suitable for processing materials: carbon steel, cast iron, mold steel, alloy steel, tool steel, stainless steel, etc Warm Tips: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data1-2mm. Quantity: According to your selection! [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - Certification: None - Hign-concerned Chemical: None - Origin: Mainland China - Certification: None - Model Number: 4.2mm-13mm - DIY Supplies: Metalworking - Material: High Speed Steel - Type: Twist Drill Bit - Use: Metal Drilling - Length: 4.2mm-13mm