___ anchors are useful because they can eliminate the need for drilling after concrete is poured.

Cast-in anchors are specifically designed to be embedded directly into concrete before it fully sets, eliminating the need for post-installation drilling. These anchors are placed into forms before the concrete is poured, allowing them to bond with the concrete as it cures. This method provides the advantage of ensuring a secure fastening point that is integral to the concrete structure.

The use of cast-in anchors is beneficial in scenarios where drilling could compromise the integrity of the concrete or where access is restricted after the concrete has cured. This can save time and labor costs, especially in large construction projects where precision and structural integrity are critical.

In contrast, other types of anchors, such as post-installed anchors or expansion anchors, require drilling into the cured concrete, which may be less efficient and introduce potential issues related to dust, debris, and precision of placement.