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