ONLY for some equipment support both 125V and 250V input please make sure your equipment supports wide voltage input. If your Dryer is only work on 250V this adapter cord cannot provide 250 for your dryer. Because of the Household regular 15A 5-15 power inlet on wall only provide 125V for output. You can get the cord or adapter in your need.
Parkworld 62329 Household Regular 5-20 Plug 20A male to Dryer 14-30 Receptacle 4-Prong Female Adapter Cord Two Hots Bridged in Female Only Output
$22.81