Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1 Catalog: Parts: Brick, Round | 43 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip Catalog: Parts: Brick, Round | 40 |
| 20952 | Brick, Round 1 1/2 x 1 1/2 x 2/3 Dome Top Catalog: Parts: Brick, Round | 4 |
| 4588 | Brick, Round 1 x 1 with Fins Catalog: Parts: Brick, Round | 1 |
| 553 | Brick, Round 2 x 2 Dome Top Catalog: Parts: Brick, Round | 82 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder Catalog: Parts: Brick, Round | 24 |
| 3941 | Brick, Round 2 x 2 with Axle Hole Catalog: Parts: Brick, Round | 35 |
| 17485 | Brick, Round 2 x 2 with Pin Holes Catalog: Parts: Brick, Round | 1 |
| 30361c | Brick, Round 2 x 2 x 2 Robot Body - with Bottom Axle Holder x Shape + Orientation Catalog: Parts: Brick, Round | 1 |
| 3063 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch Catalog: Parts: Brick, Round | 23 |
| 85080 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside Catalog: Parts: Brick, Round | 24 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch Catalog: Parts: Brick, Round | 23 |
| 33230 | Brick, Round Corner 16 x 16 Catalog: Parts: Brick, Round | 1 |