Amazon.com: Eske Kouri Gobricks GDS-637 1x4 Brick with one Side Connecting Bump Compatible with Lego 30414 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (135 Sand Blue(054),500 PCS) :
LEGO Part 30414 Brick, Modified 1 x 4 with 4 Studs on 1 Side [Yellow] (4164073) | iBricktoys: LEGO shop guide and database
Amazon.com: Eske Kouri Gobricks GDS-637 1x4 Brick with one Side Connecting Bump Compatible with Lego 30414 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (154 Dark Red(014),500 PCS) :
LEGO Dark Red Brick 1 x 4 with 4 Studs on One Side (30414) | Brick Owl - LEGO Marketplace