Is this a rare piece for Technic builders?

Yes, this is a vintage piece from the 2002 Technic theme (970110-1) and is sought after by specialized collectors.

What is the piece count in this set?

This specific pack contains 25 LEGO Pneumatic T-Pieces.

These pieces are part of the Technic theme, identified by the set number 970110-1.

Name: LEGO Pneumatic T-Pieces (Pack of 25) (970110-1)
Brand: LEGO

Technic

Technic · 2002

Theme · TechnicPieces · 25Set Number · 970110-1Year · 2002

Used

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New / Sealed

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Is this a rare piece for Technic builders?: Yes, this is a vintage piece from the 2002 Technic theme (970110-1) and is sought after by specialized collectors.
What is the piece count in this set?: This specific pack contains 25 LEGO Pneumatic T-Pieces.
What theme does this part belong to?: These pieces are part of the Technic theme, identified by the set number 970110-1.