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