【High Durability】 These umika-made hex shank bits are designed for concrete and boast high durability. They exhibit excellent performance, especially against hard materials. 【Ease of Use】 The hex shank design allows for easy attachment to various drills. It's designed to improve work efficiency. 【Size and Application】 The 21.5mm diameter and 150mm length are ideal for general concrete work. Suitable for a wide range of applications, they are useful for everything from DIY projects to professional sites. - Brand: umika - Model Number: HEXLL 21.5 - Type: Hex Shank Bit - Size: 21.5mm - Application: For Concrete - Length: 600mm Effective Length: 460 Thank you for viewing.