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