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