LEGO Arm Mechanical, Battle Droid (30377) has been used in at least 218 Lego sets over the past 14 years, since it was first used in 1999. This part can be most commonly found in Star Wars sets where it has been included 83 times. You are most likely to find this Lego part in Black, but keep an eye out for it in Medium Green which is the rarest colour, only being found in 1 set.
LEGO Space Skeleton Arm Colour List
|Lego Colour||Lego Item Number|
|Bright Bluish Green||4142991|
|Dark Stone Grey||4210900|
|Medium Stone Grey||4211658|