The Kalz KBA through bolt is an anchor made of zinc plated steel. The Kalz KBA-H through bolt is an anchor made of sherardized steel. The anchors are made in sizes M8, M10, M12, M16 and M20 and are placed into a drilled hole and anchored by torque-controlled expansion.

The Kalz KBA and KBA-H anchors in the range of M8 to M20 correspond to the pictures and provisions given in annexes A and B. The characteristic material values, dimensions and tolerances of the anchors not indicated in annexes A and B shall correspond to the respective values laid down in the technical documentations of this European Technical Assessment.