Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1 Catalog: Parts: Brick, Round | 109 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip Catalog: Parts: Brick, Round | 45 |
| 15395 | Brick, Round 2 x 2 Dome Bottom Catalog: Parts: Brick, Round | 15 |
| 553 | Brick, Round 2 x 2 Dome Top Catalog: Parts: Brick, Round | 113 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder Catalog: Parts: Brick, Round | 30 |
| 20953 | Brick, Round 2 x 2 Sphere with Stud / Robot Body Catalog: Parts: Brick, Round | 3 |
| 3941 | Brick, Round 2 x 2 with Axle Hole Catalog: Parts: Brick, Round | 71 |
| 17485 | Brick, Round 2 x 2 with Pin Holes Catalog: Parts: Brick, Round | 15 |
| 30151 | Brick, Round 2 x 2 x 1 2/3 Dome Top Catalog: Parts: Brick, Round | 14 |
| 3063 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch Catalog: Parts: Brick, Round | 104 |
| 85080 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside Catalog: Parts: Brick, Round | 117 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch Catalog: Parts: Brick, Round | 8 |
| 48092 | Brick, Round Corner 4 x 4 Macaroni Wide with 3 Studs Catalog: Parts: Brick, Round | 3 |
| 24599 | Brick, Round Corner 5 x 5 x 1 without Studs Catalog: Parts: Brick, Round | 3 |