Foot pump inflating a mattress: Listen & Download Foot pump inflating a mattress .mp3 Error! Change your browser, please! ⇓ Download Hydraulic mechanism, on, off ⚠ Drawbridge raise chains ⚠ Lower chains, Drawbridge ⚠ Hand winch ⚠ Mechanical sounds ⚠ Foot pump inflating a mattress ⚠ Bicycle hand pump ⚠ Kick the bike speed switch ⚠ Chain, chain hoist ⚠ Small hydraulic gear ⚠ ★★★★★