LEGO Hose, Pneumatic 4mm D. 21L / 16.8cm

LEGO Hose, Pneumatic 4mm D. 21L / 16.8cm has been used in at least 2 Lego sets over the past 21 years, since it was first used in 1992. This part can be most commonly found in Technic sets where it has been included 2 times. You are most likely to find this Lego part in Blue, but keep an eye out for it in Black which is the rarest colour, only being found in 1 set.