Radional, Rádio Center or Severo Roth for electrical parts and Ferramentas Gerais for everything else. Know any of these?
Seriously though, Ferramentas Gerais (General Tools) is like the biggest store ever. Actually, there are 4 huge warehouses, side by side. It's much bigger than Home Depot, Lowes and they carry way more itens than SPI. If you can't find something there, it probably does not exist.