●plastic ●【HIGH-QUALITY PERFORMANCE】-- The electric air pump designs with Quick-fill and High Pressure, enable to deflate and inflate efficiently with rated power 50W and 0. 5PSI (3500Pa), you can inflate the Queen-size/King-size air mattress within few minutes, which saves much time than other old hand pumps. ●【EASY TO USE】 -- The inflatable mattress pump is compatible with 12V DC and 110 -120V AC power supply. To inflatable, just put the inflatable head at the filling hold, then press the switch. To deflate, you should put the inflatable head in the vent hole, then press the switch to deflate. Our electric air mattress pumps are simple to operate. ●【UNIQUE SOUND INSULATION DESIGN】-- This air pump uses an advanced wheel design and high-quality metal impellers, which greatly reduces its noise in operation; Great for last-minute mattress set-up when others nearby are already resting. ●【NOZZLES TO CHOOSE】-- We have 3 nozzles of different size in the electric air mattress pumps ? S, M and L, allowing you to inflate/deflate different items in any occasions! ●【VERSATILE USE】-- Chunedu air pumps help you save time on inflating air mattresses/airbed, pool floats, inflatable pools, pool toys, inflatable furniture, swimming rings, and more.