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