LEGO® Technic Gear Rack 1x4 MED. ST. GREY (MEDIUM STONE GREY) - (4211450/ 3743)
LEGO 樂高3743 EV3 配件齒輪齒條6592 87761 6630 64781 24121
Brick-Shop - Technic 4205760 Gear Rack 1 x 4 Light Gray (3743) Parts Light Gray Technic Turntable, large Type 1, complete AssemblyElectric Battery Box Train Power Functions Motor online Engine Motor Lego (7897)
LEGO PART 3743 Technic Gear Rack 1 x 4 | Rebrickable - Build with LEGO
Soonho Kong · Building a LEGO Turing Machine blah??