Technic Brick Special 2 x 2 with Solid Ball and Axle Hole

57909a

Technic Special

Appears in 52 official sets

Catalog rarity

Common

Used in 52 official sets — a staple element in many builds.

Based on official set inventories in our catalog — not market price or production volume.

Best sets to source this part

Smallest official sets that include this element — useful when you only need one piece, not the whole theme.

Technic Brick Special 2 x 2 with Solid Ball and Axle Hole (part 57909a) is a Technic Special used in 52 official LEGO sets. Scan or search to authenticate loose parts and check market value. Open the parent-set list to see which themes and years used this mold — essential when a common shape appears in a rare color or print.

→ Category: Technic Special
→ Appears in 52 official sets
→ Scan a photo to identify this part instantly
→ Compare market prices

Market value

No estimate on BrickID yet

We don't pull live prices from marketplaces automatically — that requires paid seller API access. Check live listings below, or be the first to share a price you paid or saw.

Check live listings →

Share a price you paid or saw

Help other collectors — we aggregate anonymous reports on this page.