| Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1
Catalog: Parts: Brick, Round | 650 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip
Catalog: Parts: Brick, Round | 22 |
| 3062old | Brick, Round 1 x 1 - Solid Stud, No Bottom Lip
Catalog: Parts: Brick, Round | 7 |
| 25214 | Brick, Round 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole
Catalog: Parts: Brick, Round | 1 |
| x12 | Brick, Round 1 x 1 with Ball (Finial)
Catalog: Parts: Brick, Round | 1 |
| 4588 | Brick, Round 1 x 1 with Fins
Catalog: Parts: Brick, Round | 2 |
| 71075 | Brick, Round 1 x 1 x 1 2/3
Catalog: Parts: Brick, Round | 3 |
| 553 | Brick, Round 2 x 2 Dome Top
Catalog: Parts: Brick, Round | 111 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder
Catalog: Parts: Brick, Round | 32 |
| 3941 | Brick, Round 2 x 2 with Axle Hole
Catalog: Parts: Brick, Round | 49 |
| 92947 | Brick, Round 2 x 2 with Axle Hole and Grille / Fluted Profile
Catalog: Parts: Brick, Round | 1 |
| 17485 | Brick, Round 2 x 2 with Pin Holes
Catalog: Parts: Brick, Round | 3 |
| 30151 | Brick, Round 2 x 2 x 1 2/3 Dome Top
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 |
| 6222 | Brick, Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole
Catalog: Parts: Brick, Round | 2 |
| 87081 | Brick, Round 4 x 4 with Hole
Catalog: Parts: Brick, Round | 8 |
| 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 | 31 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch
Catalog: Parts: Brick, Round | 31 |
| 88293 | Brick, Round Corner 3 x 3 x 2 Dome Top
Catalog: Parts: Brick, Round | 1 |
| 48092 | Brick, Round Corner 4 x 4 Macaroni Wide with 3 Studs
Catalog: Parts: Brick, Round | 3 |
| 47974 | Brick, Round Corner 4 x 8 Full Brick Double
Catalog: Parts: Brick, Round | 1 |
| 47974c01 | Brick, Round Corner 4 x 8 Full Brick Double with 2 Fixed Rotatable Friction Pins
Catalog: Parts: Brick, Round | 1 |
| 24599 | Brick, Round Corner 5 x 5 x 1 without Studs
Catalog: Parts: Brick, Round | 1 |