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