These Turbines convert raw energy into industrial power with a constant thrum and rotation. Packed with exhaust stacks, intake vents, and armored housing, they’re ideal as power infrastructure for bases, outposts, or refineries. All pictured items are in the 28/32mm scale. -What's Included: Turbine A (3 pieces):32mm: 89x117x54mm / 3.5x4.6x2.1 inches28mm: 78x102x47mm / 3.1x4.0x1.9 inches20mm: 55x72x33mm / 2.2x2.8x1.3 inches15mm: 47x62x29mm / 1.9x2.4x1.1 inches Turbine B (3 pieces):32mm: 148x149x68mm / 5.8x5.9x2.7 inches28mm: 129x130x59mm / 5.1x5.1x2.3 inches20mm: 91x91x42mm / 3.6x3.6x1.7 inches15mm: 78x78x36mm / 3.1x3.1x1.4 inches Turbine C (3 pieces):32mm: 118x118x83mm / 4.6x4.6x3.3 inches28mm: 103x103x72mm / 4.1x4.1x2.8 inches20mm: 73x73x51mm / 2.9x2.9x2.0 inches15mm: 62x62x44mm / 2.4x2.4x1.7 inches All items come unpainted in non-toxic gray PLA. Some assembly may be required. We inspect all of our products prior to shipment, but due to the nature of 3d printing, some objects may require some cleanup prior to use. This item is designed by Forbidden Prints.