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