The Tajima Magnet Karuko is a Japanese anchoring system designed for chalk lines, plumb bobs, and marking lines. Thanks to its powerful integrated 300 mT magnet, it can be securely attached to metal surfaces to facilitate tracing work on construction sites.

Versatile, it can also be used on wood thanks to its integrated point, as well as on concrete via its fixing hole compatible with concrete nails. A metal hook is also included for delicate surfaces where it is best to avoid marks or perforations.