LEGO Technic, Axle 8 with Stop (55013) has been used in at least 123 Lego sets over the past 7 years, since it was first used in 2006. This part can be most commonly found in Technic sets where it has been included 23 times. You are most likely to find this Lego part in Dark Bluish Gray, but keep an eye out for it in Black which is the rarest colour, only being found in 6 sets.
LEGO Cross Axle 8m With End Stop Colour List
|Lego Colour||Lego Item Number|
|Dark Stone Grey||4499858|