Comprised of a hollow threaded bar attached with a drill bit that performs drilling. The hollow bar allows air and water to freely pass through during drilling to remove debris. After reaching the required depth, grout fills the bar under pressure to completely cover the bolt.

The coupler joins hollow bars to extend the bolt length, allowing the anchor to be elongated based on specific site requirements and design depths.

High-strength plates and nuts are installed according to design requirements to ensure stable load distribution and secure anchoring.

The drill bit is selected specifically based on the ground condition to optimize drilling efficiency and penetration performance.