The piece is red 2.5" X 2.5" square, Lattice design with 2 studs by 2 studs solid tile in middle and 8 studs on each outside around the edge

lego piece


It's 4151 Plate, Modified 8 x 8 with Grille. There's a newer variant with a hole, too.

In red, it was in only one set: 6989 Mega Core Magnetizer


  • 4
    That was definitely one of the sets to gaze at longingly in the catalog as a kid.
    – KRyan
    Dec 3 '21 at 18:36
  • 2
    That's a great set too.
    – Joshua
    Dec 3 '21 at 21:18
  • M-Tron was my favorite, I didn't have this one back then, but I think I do now after buying a huge tub used of legos many years ago.
    – rtaft
    Dec 3 '21 at 22:23
  • I'm not that old but I feel the vibe :)
    – Shahriar
    Dec 25 '21 at 9:17

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