Features High-Speed Steel: Made from high-quality high-speed steel, ensuring long-lasting durability for extended use. Versatile Hex Shank: Features a 1/4in (6.35mm) hex shank and includes six cutter sizes ranging from 6mm to 19mm, providing versatility for various woodworking applications. Efficient Five Flutes Design: The five flutes design offers small chip loads and quicker removal, making it ideal for chamfering, deburring, and countersinking with enhanced efficiency. Rapid Sawdust Discharge: Enables rapid and smooth discharge of wood sawdust during use, enhancing the overall woodworking experience. Soft Material Compatibility: Suitable for soft materials such as wood and plastic, making it an ideal choice for woodworking projects. Note: Not suitable for use on metal s. Features: 1、Countersinks are made from good quality high speed steel which ensures a long service life 2、Hex shank size 1/4in (6.35mm) and includes six cutter sizes of 6mm, 8mm, 9mm, 12mm, 16mm, 19mm 3、Ideal for chamfering, deburring and countersinking. Five flutes design provides small chip loads and quicker removal 4、Can discharge wood sawdust more rapidly and smoothly in the process of using 5、Suitable for board of low hardness such as wood, plastic and other soft material. Cannot be used for metal Specification: Description: These countersinks, made of high speed steel, are very sharp and and you use them for a long time. 1/4" hex shank fits most handheld and stationary drills. Five flute design reduces vibration for smoother drilling and extended life. Precision-ground 90 degree tip for countersinking into wood plate or thin plastic plat. They are six different size heads which are great for all the different projects. Features: Countersinks are made from good quality high speed steel which ensures a long service life. Hex shank size 1/4" (6.35mm) and includes six cutter sizes of 6mm, 8mm, 9mm, 12mm, 16mm, 19mm. Ideal for chamfering, deburring and countersinking. Five flutes design provides small chip loads and quicker removal. Can discharge wood sawdust more rapidly and smoothly in the process of using. Suitable for board of low hardness such as wood, plastic and other soft material. Cannot be used for metal. Specification: Material: HHS Cutter: 6mm / 0.23", 8mm / 0.31", 9mm / 0.35", 12mm / 0.47", 16mm / 0.63", 19mm / 0.75" Hex Shank: 6.35mm(1/4") Length: 48mm / 1.89" Flute: 5 Angle: 90° Weight: 124g(approx.) Package Includes: 6pcs x Countersinks Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from th Package List