Baby Jogger City select stroller adapter T-shaped bar Britax Companion car seat. Condition is "Used". Shipped with USPS First Class (3 to 5 business days).

T-shaped bar for the City Select stroller, to be used to attach Britax Companion infant car seats.  

Note that this is only ONE of the parts needed.  (You also need the brackets and U-shaped bar, which are not included here, but listed separately).

Fully functional.

Came as part of the adapter model 50936