| Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1
Catalog: Parts: Brick, Round | 5731 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip
Catalog: Parts: Brick, Round | 27 |
| 3062old | Brick, Round 1 x 1 - Solid Stud, No Bottom Lip
Catalog: Parts: Brick, Round | 5 |
| 20952 | Brick, Round 1 1/2 x 1 1/2 x 2/3 Dome Top
Catalog: Parts: Brick, Round | 173 |
| x12 | Brick, Round 1 x 1 with Ball (Finial)
Catalog: Parts: Brick, Round | 2 |
| 71075 | Brick, Round 1 x 1 x 1 2/3
Catalog: Parts: Brick, Round | 1 |
| 3386 | Brick, Round 1 x 1 x 2/3 Half Circle Extended with Side Stud
Catalog: Parts: Brick, Round | 1 |
| 33286 | Brick, Round 1 x 1 x 2/3 with Flower Edge (4 Knobs on Base)
Catalog: Parts: Brick, Round | 1 |
| 15395 | Brick, Round 2 x 2 Dome Bottom
Catalog: Parts: Brick, Round | 1639 |
| 24947 | Brick, Round 2 x 2 Dome Bottom with Studs
Catalog: Parts: Brick, Round | 464 |
| 553 | Brick, Round 2 x 2 Dome Top
Catalog: Parts: Brick, Round | 1554 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder
Catalog: Parts: Brick, Round | 4 |
| 3941 | Brick, Round 2 x 2 with Axle Hole
Catalog: Parts: Brick, Round | 590 |
| 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 | 1 |
| 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 | 4 |
| 49308 | Brick, Round 3 x 3 x 1 1/3 Dome Top - Open Stud
Catalog: Parts: Brick, Round | 225 |
| 6222 | Brick, Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole
Catalog: Parts: Brick, Round | 1 |
| 87081 | Brick, Round 4 x 4 with Hole
Catalog: Parts: Brick, Round | 51 |
| 68325 | Brick, Round 4 x 4 with Recessed Center and Hole
Catalog: Parts: Brick, Round | 44 |
| 3063 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch
Catalog: Parts: Brick, Round | 12 |
| 85080 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside
Catalog: Parts: Brick, Round | 247 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch
Catalog: Parts: Brick, Round | 17 |
| 88293 | Brick, Round Corner 3 x 3 x 2 Dome Top
Catalog: Parts: Brick, Round | 694 |
| 48092 | Brick, Round Corner 4 x 4 Macaroni Wide with 3 Studs
Catalog: Parts: Brick, Round | 6 |
| 49612 | Brick, Round Corner 4 x 4 x 2 2/3 Dome Top
Catalog: Parts: Brick, Round | 11 |
| 47974 | Brick, Round Corner 4 x 8 Full Brick Double
Catalog: Parts: Brick, Round | 1 |
| 58846 | Brick, Round Corner 10 x 10 with Slope 33 Edge, Axle Hole, Facet Cutout
Catalog: Parts: Brick, Round | 1 |
| 33230 | Brick, Round Corner 16 x 16
Catalog: Parts: Brick, Round | 34 |