Eichholtz square side table set available in different colors and finishes:
Harvey side table 65x65x55,5cm:
https://www.eichholtz.com/en/side-table-harvey109871.html 
Royalton side table 60x60x60 cm:
https://www.eichholtz.com/en/side-table-royalton111984.html 
Horizon side table 60x60x50 cm:
https://www.eichholtz.com/en/side-table-horizon112391.html 
Palmer side table 65x65x50 cm:
https://www.eichholtz.com/en/side-table-palmer109994.html