Is this a rare piece for Technic collectors?

Yes, this is a vintage Technic part from 2002, making it desirable for collectors of older sets.

How many pieces are included in this pack?

The pack contains 25 pieces of the 20 Tooth Double Bevel Gears.

This specific gear set is part of the Technic theme.

Name: LEGO 20 Tooth Double Bevel Gears (Pack of 25) (970623-1)
Brand: LEGO

Technic

Technic · 2002

Theme · TechnicPieces · 25Set Number · 970623-1Year · 2002

Used

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New / Sealed

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Is this a rare piece for Technic collectors?: Yes, this is a vintage Technic part from 2002, making it desirable for collectors of older sets.
How many pieces are included in this pack?: The pack contains 25 pieces of the 20 Tooth Double Bevel Gears.
What theme does this gear set belong to?: This specific gear set is part of the Technic theme.