Latches with push handle in die-cast zinc alloy with hole for inserting a padlock with hook, base in glass fibre reinforced polyamide-based technopolymer, drive shaft and protective cap in die-cast zinc alloy, closing lever with cylindrical part in die-cast zinc alloy with technopolymer coating, packing ring in silicone cord and lock with two dust covers in red acetal-based technopolymer with two keys.