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