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