HG 1/144 refers to High Grade Gundam model kits that are scaled at 1/144. This means that the model is 144 times smaller than the actual mobile suit it represents. HG 1/144 kits are known for their affordability, ease of assembly, and good level of detail, making them an excellent entry point into Gundam model building. The majority of High Grade model kits are produced in the 1/144 scale, offering a wide range of mobile suits to choose from.