Steam power makes it go whump whump whump. This links up to other Steam blocks and can conduct steam power.
Steam Piston price in Growtopia: sells for about 10/WL (median of 8 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: QALDEN, INIDUREN, 9N5S, 3OHI, HRQD