LEGO part 32474 - Blue Technic Ball Joint at BrickScout
Technic Ball Joint with Black Eye with Pupil Pattern : Part 32474pb002 | BrickLink
Technic, Axle Connector 2 x 3 with Ball Joint Socket - Open Sides, Angled Forks with Closed Axle Holes : Part 32174 | BrickLink
Technic Round - LEGO® Technic Ball Joint With Through Axle - The shop Briques Passion
Building Block Moc Technical Parts 2pcs Power Joint & 2pcs Power Joint Ballpart Compatible With Lego For Kids Boys Toy 92910 - Model Building Kits - AliExpress