Random part of the day: Brick 2X2 Ø4.85 Female

Despite belonging to the corresponding family, this part has never appeared in the KK2 buildable figures, does it?

@Atuin:
Don’t know about that, but I’m pretty sure this piece never appeared in Galidor, which I believe is where this system of hinges originated.

Does this mean there are androgynous parts? I think the 2x2 brick with Technic pin out the aide and axle hole through the centre may qualify?

@PurpleDave said:
" @Atuin:
Don’t know about that, but I’m pretty sure this piece never appeared in Galidor, which I believe is where this system of hinges originated."

Yikes^^ You really got me there...
Though isn't the Bahrag/Exo-Toa 'knee-joint' also part of this category then? Also I think the Alpha Team Mission: Deep Sea sets used a similar style of hinge in a few of the larger sets. At least the Alpha Team sets were released before Galidor (it may still be developed specifically for Galidor anyways...)

However, KK2 was still the first theme to use them in a more 'universal' type of part I would say.

@MeisterDad said:
"Does this mean there are androgynous parts? I think the 2x2 brick with Technic pin out the aide and axle hole through the centre may qualify?"

Would also suggest that normal bricks with no such connectors at all are genderfluid

@Atuin said:
" @PurpleDave said:
" @Atuin:
Don’t know about that, but I’m pretty sure this piece never appeared in Galidor, which I believe is where this system of hinges originated."

Yikes^^ You really got me there...
Though isn't the Bahrag/Exo-Toa 'knee-joint' also part of this category then? Also I think the Alpha Team Mission: Deep Sea sets used a similar style of hinge in a few of the larger sets. At least the Alpha Team sets were released before Galidor (it may still be developed specifically for Galidor anyways...)

However, KK2 was still the first theme to use them in a more 'universal' type of part I would say."

This is all the case: both Galidor, Mission Deep Sea sub limbs (4793, 4794, 4789, the hip joints of some 2002-2003 sets (8557, 8558, 8583, and 8015), the KKII large figures, and the system bricks with this connection were all compatible. And anything technic too, of course.
Although it could be argued that the 2004 Designer sets was also the first theme to use them in a more universal way as those also came out in 2004 (4506, 4507) That's where this specific version originated.

@Atuin no, the KKII buildable figures only had the 2x2 and 2x3 ones with receptacles on either end; one for the straight pin and one for the disk with pin. On the ends they connected to the specialized foot and hand parts and to the torsos.

A very common part, but one which personally I don't think is very good.

Like most lego joints, it's just not strong enough. Lego gets heavy, and often these are just weak. The large ball joints have the extender pieces with the internal rubber nub as an option for when the joint needs to be stronger, I would like to see an equivalent for these ratchet joints.

I do appreciate the introduction of a 1x2 socket brick this year with the two Spidermen brick-built figures, even if they share the same weakness.

@Wavelength:
https://brickset.com/sets/containing-design-80431

Took me a while to identify the part you referred to. Anyways, introduced in May with 76989, and followed up in June with 10302 and 71774 before it showed up in any Marvel sets.