Amazon.com: Gobricks GDS-654 Slope, Curved 2 x 1 x 1 1/3 with Recessed Stud compatible with lego 6091 32807 All Major Brick Brands Toys Building Blocks Technical Parts (194 Light Bluish Gray(071),30 PCS) : Toys & Games
Archs - LEGO® Slope Curved 1x1x2 1/3 with Recesses Stud - The shop Briques Passion
Slope 30 1 x 1 x 2/3 with Swiss Cheese Pattern : Part 54200pb103 | BrickLink
Archs - LEGO® Slope Curved 1x1x1 - 1/3 with Recessed Stud - The shop Briques Passion
LEGO® Slope 30 1 x 1 x 2/3, Trans-Dark Blue "Water" [54200] – DASHBRICK