Can you identify this piece. It can be used to join 2 axles together and I'd like to order more. I've also seen some without the cross shape inside which I think can join bars together.

side view side view

top view top view

1 Answer 1


Looks like Part #6538c - Technic, Axle Connector 2L (Smooth with x Hole + Orientation).

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  • Can these axle connectors work with bars? If not, is there a part that will? Mar 4, 2020 at 17:16
  • 1
    The usual 3.18 mm bar? It will work fine with 6538a and 6538c. Not as strong compared to Technic axle, but will work.
    – Alex
    Apr 4, 2020 at 13:04

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