Features Versatile Compatibility: Designed to connect seamlessly with electric hammers and impact drills, enhancing your concrete drilling capabilities Durable High Carbon Steel: Crafted from advanced high carbon steel, this drill bit shank is heat treated for exceptional durability and longevity in demanding applications Efficient Blade Design: Features a reasonable structure with round alloy blades, ensuring even stress distribution and minimizing the risk of blade drop during use Advanced Welding Technology: Utilizes high-frequency welding for a secure and aesthetically pleasing weld, providing a reliable connection that enhances performance Complete Accessory Kit: Includes 1 connecting rod, 1 drill bit, 1 hex wrench, and 1 nut, ensuring you have everything needed for successful operation right out of the box Features: 1、Main Application: The shank is mainly used to connect the equipment like electric hammers, and impact drills. Also the drill hole opener convert. 2、High Carbon Steel Material: The shank is made of advanced high carbon steel material, which is heat treated and appearance treated, giving the product a long life span. 3、Reasonable Structure: The combination of round alloy blades makes each blades evenly strsed and makes sure that they have little chance to drop. 4、 Welding: The adaptation of the high frequency welding technology makes a tight weld opening, which comes with a slip weld opening and a beautiful appearance. 5、Impact Equipment Accories: The product includes 1 connecting rod, 1 drill bit, 1 hex wrench, and 1 nut. The combination makes the system work succfully. Specification: Item Type: Electric Hollow Core Drill Bit Shank Material: High Carbon Steel Material Color: Silver Size: Approx.155mm/6.1in Suitable For: The connection between the electric hammer and the impact drill. Also the drill hole opener convert. Package List: 1 x Connecting Rod 1 x Drill Bit 1 x Hex Wrench 1 x Nut Package List 1 x Connecting Rod 1 x Drill Bit 1 x Hex Wrench 1 x Nut