How to Start a Core Hole Without Wandering | BLUEROCK BLOCK™
Posted by Todd Yamashita on 10th Nov 2026
The BLUEROCK BLOCK™ is a patented, reusable centering guide kit that helps you start handheld core holes in concrete and rock. Watch the video to see how to drill the pilot hole, secure the guide, and start coring with confidence.
No Walk. No Wander. Shop all available BLUEROCK BLOCK™ sizes.