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