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