LEGO Black String with Coupling Points and End Studs 1 x 21 has been used in at least 40 LEGO sets over the past 23 years, since it was first used in
LEGO Black String with Coupling Points and End Studs 1 x 21 (14210 / 63141)
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LEGO PART 14226c21 String with End Studs 21L Overall
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has been used in at least 18 LEGO sets over the past 28 years, since it was first used in 1996. You can also find this part in at least 2 other
LEGO Black String with Studs on Ends 21L
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LEGO Sets with Part x127c21 String with End Studs 21L Overall
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