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Amazon.com: Gobricks GDS-936 Connector Perpendicular 3L with 2Pin Holes Compatible with Lego 42003 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (30 PCS,24 Yellow(030)) : Toys & Games
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes - LEGO® Part 42003 - Super Briques