LEGO MOC Minifig Mover - Chain Drive Alternative Gearing by djm | Rebrickable - Build with LEGO
sebiepic on Twitter: "Liebherr modified chain drive with an rotatable claw / circa 270 degree rotatable arm #lego #legotechnic https://t.co/pZiWyX7hBN" / Twitter
Smartable MOC Technical Wedge Belt Wheel/Link Chain/Link Tread Drive Gear Parts Building Block Toys Compatible All Brands 14149|Blocks| - AliExpress