LEGO PART 3003a Brick 2 x 2 without Inside Ridges | Rebrickable - Build with LEGO
LEGO Dark Stone Gray Brick 2 x 2 (3003) | Brick Owl - LEGO Marketplace
Amazon.com: Eske Kouri Gobricks GDS-540 Brick 2 x 2 Compatible with Lego 3003 35275 6223 62404 19182 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (20 PCS,126 Trans-Purple(160)) : Toys & Games
LEGO® 3003 4122451 - 4220632 - ToyPro
LEGO Part 3003 Brick 2 x 2 [Green] (300328) | iBricktoys: LEGO shop guide and database