The Magnetism Shield was a tool that allowed Gahlok-Kal's Krana-Kal to manipulate magnetism. It looked similar to Gahlok's Water Shield. It allowed Gahlok-Kal to levitate and throw magnetic metal as well as breaking large magnetic rock. These shields were the downfall of Gahlok-Kal though, as they attracted Exo-Toa scraps that piled up on Gahlok-Kal.
The Magnetism Shield was first released in the Gahlok-Kal 2003 set.