1 18 2013 srt viper gts1: 18 2013 SRT Viper GTS Maisto 1: 18 refers to reduced scale replicas of the real cars and motorcycles with which Maisto has a license agreement. Metal bodies and plastic parts are used in the Maisto 1: 18 collection. In this collection of Maisto, mostly opening doors, opening hood, opening trunk and detailed chassis are available. In some models, some parts may not open. In the Maisto 1: 18 collection, the vehicles are mounted on a plastic stand.