LEGO Black Cross Block 1 x 3 (42003 / 42796) | Brick Owl - LEGO Marketplace
BrickLink - Part 42003 : LEGO Technic, Axle and Pin Connector Perpendicular 3L with 2 Pin Holes [Technic, Connector] - BrickLink Reference Catalog
Self Locking Bricks MOC Technical Parts Connectors 20pcs CROSS BLOCK 3M Building Block Pack for Kids Compatible with Lego 42003|Model Building Kits| - AliExpress
LEGO PART 42003 Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes | Rebrickable - Build with LEGO
LEGO 8063 Tractor with Trailer Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO Part 42003: Technic, Axle and Pin Connector Perpendicular 3L with 2 Pin Hol | eBay
Amazon.com: Eske Kouri Gobricks GDS-936 Connector Perpendicular 3L with 2Pin Holes Compatible with Lego 42003 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (900 PCS,138 Dark Tan(034)) : Toys