Zuzana 2 howitzer part of Slovakia's latest military package to Ukraine

Despite being a small country, Slovakia has provided relatively large amounts of military aid to Ukraine, including five helicopters, 30 T-72 tanks, ammunition for the BM-21 Grad multiple launch rocket system and 11 MiG-29 Fulcrum fighters. Now, Slovakia is set to send Zuzana 2 155mm self-propelled howitzers to Ukraine – but what is the weapon and how will it benefit the Ukrainian armed forces?