LEGO part 6588 - Yellow Technic, Gearbox 2 x 4 x 3 1/3 at BrickScout
Amazon.com: LEGO Technic COMPLETE GEARBOX ASSEMBLY 2 x 4 x 3 1/3 Trans-Clear Wormbox gear motor REDUCER block Mindstorms robotics ev3 NXT transparent robot building power functions part 6588
LEGO Black Gearbox for Worm Gear (6588) | Brick Owl - LEGO Marketplace
Technic, Gearbox 2 x 4 x 3 1/3 : Part 6588 | BrickLink
Amazon.com: LEGO Technic COMPLETE GEARBOX ASSEMBLY 2 x 4 x 3 1/3 Trans-Clear Wormbox gear motor REDUCER block Mindstorms robotics ev3 NXT transparent robot building power functions part 6588
LEGO Black Gearbox for Worm Gear (6588) | Brick Owl - LEGO Marketplace
LEGO® 6588 4121784 - 4142824 - 6254290 - ToyPro
LEGO Technic COMPLETE GEARBOX ASSEMBLY 2 x 4 x 3 1/3 Trans-Clear Wormbox gear motor REDUCER block Mindstorms robotics ev3 NXT transparent robot building power functions part 6588 - Amazon.com
5 Sets/Lot Technical Parts 2x4x3 1/3 Gearbox 6588 32239 High-Tech Worm Gears 4716 Brick Parts Set fit for EV3 9686 Toys
Amazon.com: LEGO Technic COMPLETE GEARBOX ASSEMBLY 2 x 4 x 3 1/3 Trans-Clear Wormbox gear motor REDUCER block Mindstorms robotics ev3 NXT transparent robot building power functions part 6588
LEGO Sets with Part 6588 Technic Gearbox 2 x 4 x 3 & 1/3