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