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