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