Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1 Catalog: Parts: Brick, Round | 89861 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip Catalog: Parts: Brick, Round | 643 |
| 3062old | Brick, Round 1 x 1 - Solid Stud, No 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 | 3 |
| 71076 | Brick, Round 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 1 Catalog: Parts: Brick, Round | 1 |
| x12 | Brick, Round 1 x 1 with Ball (Finial) Catalog: Parts: Brick, Round | 9 |
| 4588 | Brick, Round 1 x 1 with Fins Catalog: Parts: Brick, Round | 6 |
| 71075 | Brick, Round 1 x 1 x 1 2/3 Catalog: Parts: Brick, Round | 1 |
| 65473 | Brick, Round 2 x 2 D. 45 degrees Elbow (25.5mm Standing Height) Catalog: Parts: Brick, Round | 1 |
| 5489 | Brick, Round 2 x 2 D. 45 degrees Elbow (27.7mm Standing Height) Catalog: Parts: Brick, Round | 1 |
| 15395 | Brick, Round 2 x 2 Dome Bottom Catalog: Parts: Brick, Round | 5 |
| 24947 | Brick, Round 2 x 2 Dome Bottom with Studs Catalog: Parts: Brick, Round | 6 |
| 553 | Brick, Round 2 x 2 Dome Top Catalog: Parts: Brick, Round | 122 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder Catalog: Parts: Brick, Round | 31 |
| 20953 | Brick, Round 2 x 2 Sphere with Stud / Robot Body Catalog: Parts: Brick, Round | 2 |
| 3941 | Brick, Round 2 x 2 with Axle Hole Catalog: Parts: Brick, Round | 16216 |
| 92947 | Brick, Round 2 x 2 with Axle Hole and Grille / Fluted Profile Catalog: Parts: Brick, Round | 1 |
| 30151 | Brick, Round 2 x 2 x 1 2/3 Dome Top Catalog: Parts: Brick, Round | 8 |
| 79850 | Brick, Round 4 x 4 Dome Top with 2 x 2 Recessed Center Catalog: Parts: Brick, Round | 597 |
| 65138 | Brick, Round 4 x 4 x 2/3 Dome Top with Hole Catalog: Parts: Brick, Round | 2 |
| 18897 | Brick, Round 6 x 6 with 4 Side Pin Holes and Center Hole Catalog: Parts: Brick, Round | 1 |
| 3063 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch Catalog: Parts: Brick, Round | 32 |
| 85080 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside Catalog: Parts: Brick, Round | 30 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch Catalog: Parts: Brick, Round | 32 |
| 2577 | Brick, Round Corner 4 x 4 Full Brick Catalog: Parts: Brick, Round | 1 |