Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1 Catalog: Parts: Brick, Round | 112437 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip Catalog: Parts: Brick, Round | 220 |
| 3062old | Brick, Round 1 x 1 - Solid Stud, No Bottom Lip Catalog: Parts: Brick, Round | 306 |
| 20952 | Brick, Round 1 1/2 x 1 1/2 x 2/3 Dome Top Catalog: Parts: Brick, Round | 37 |
| 71076 | Brick, Round 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 1 Catalog: Parts: Brick, Round | 14 |
| 25214 | Brick, Round 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole Catalog: Parts: Brick, Round | 72 |
| x12 | Brick, Round 1 x 1 with Ball (Finial) Catalog: Parts: Brick, Round | 10 |
| 4588 | Brick, Round 1 x 1 with Fins Catalog: Parts: Brick, Round | 31 |
| 71075 | Brick, Round 1 x 1 x 1 2/3 Catalog: Parts: Brick, Round | 162 |
| 3386 | Brick, Round 1 x 1 x 2/3 Half Circle Extended with Side Stud Catalog: Parts: Brick, Round | 31 |
| 33286 | Brick, Round 1 x 1 x 2/3 with Flower Edge (4 Knobs on Base) Catalog: Parts: Brick, Round | 12 |
| 77808 | Brick, Round 1 x 2 with Hollow Studs and Open Center with Bars Catalog: Parts: Brick, Round | 8 |
| 65473 | Brick, Round 2 x 2 D. 45 degrees Elbow (25.5mm Standing Height) Catalog: Parts: Brick, Round | 238 |
| 15395 | Brick, Round 2 x 2 Dome Bottom Catalog: Parts: Brick, Round | 155 |
| 24947 | Brick, Round 2 x 2 Dome Bottom with Studs Catalog: Parts: Brick, Round | 8 |
| 553 | Brick, Round 2 x 2 Dome Top Catalog: Parts: Brick, Round | 5565 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder Catalog: Parts: Brick, Round | 1385 |
| 20953 | Brick, Round 2 x 2 Sphere with Stud / Robot Body Catalog: Parts: Brick, Round | 4 |
| 5256 | Brick, Round 2 x 2 with 4 Roots / Feet and Axle Hole Catalog: Parts: Brick, Round | 1 |
| 3941 | Brick, Round 2 x 2 with Axle Hole Catalog: Parts: Brick, Round | 43022 |
| 92947 | Brick, Round 2 x 2 with Axle Hole and Grille / Fluted Profile Catalog: Parts: Brick, Round | 18842 |
| 17485 | Brick, Round 2 x 2 with Pin Holes Catalog: Parts: Brick, Round | 7628 |
| 27266 | Brick, Round 2 x 2 with Spikes and Axle Hole Catalog: Parts: Brick, Round | 13 |
| 30151 | Brick, Round 2 x 2 x 1 2/3 Dome Top Catalog: Parts: Brick, Round | 76 |
| 33287 | Brick, Round 2 x 2 x 2 Dome Top with Cross Cut Slots Catalog: Parts: Brick, Round | 1 |
| 30361 | Brick, Round 2 x 2 x 2 Robot Body (Undetermined Type) X 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 | 1988 |
| 30361b | Brick, Round 2 x 2 x 2 Robot Body - with Bottom Axle Holder x Shape x Orientation Catalog: Parts: Brick, Round | 2 |
| 30361a | Brick, Round 2 x 2 x 2 Robot Body - without Bottom Axle Holder Catalog: Parts: Brick, Round | 40 |
| 4591 | Brick, Round 2 x 2 x 2 with Fins Catalog: Parts: Brick, Round | 16 |
| 49308 | Brick, Round 3 x 3 x 1 1/3 Dome Top - Open Stud Catalog: Parts: Brick, Round | 6 |
| 73111 | Brick, Round 3 x 3 x 2 with Recessed Center and Axle Hole Catalog: Parts: Brick, Round | 9 |
| 79850 | Brick, Round 4 x 4 Dome Top with 2 x 2 Recessed Center Catalog: Parts: Brick, Round | 320 |
| 6222 | Brick, Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Catalog: Parts: Brick, Round | 39 |
| 87081 | Brick, Round 4 x 4 with Hole Catalog: Parts: Brick, Round | 1657 |
| 68325 | Brick, Round 4 x 4 with Recessed Center and Hole Catalog: Parts: Brick, Round | 3 |
| 65138 | Brick, Round 4 x 4 x 2/3 Dome Top with Hole Catalog: Parts: Brick, Round | 465 |
| 18897 | Brick, Round 6 x 6 with 4 Side Pin Holes and Center Hole Catalog: Parts: Brick, Round | 13 |
| 57587 | Brick, Round 7 x 7 x 4 Dome Top Catalog: Parts: Brick, Round | 1 |
| 3063 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch Catalog: Parts: Brick, Round | 815 |
| 85080 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside Catalog: Parts: Brick, Round | 14783 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch Catalog: Parts: Brick, Round | 85 |
| 5152 | Brick, Round Corner 3 x 3 Macaroni with 2 Studs Catalog: Parts: Brick, Round | 10 |
| 65617 | Brick, Round Corner 3 x 3 without Studs Catalog: Parts: Brick, Round | 453 |
| 88293 | Brick, Round Corner 3 x 3 x 2 Dome Top Catalog: Parts: Brick, Round | 4151 |
| x1042b | Brick, Round Corner 4 x 2 Macaroni Double with Stud Notches Catalog: Parts: Brick, Round | 36 |
| x1042a | Brick, Round Corner 4 x 2 Macaroni Double without Stud Notches Catalog: Parts: Brick, Round | 1 |
| 2577 | Brick, Round Corner 4 x 4 Full Brick Catalog: Parts: Brick, Round | 72 |
| 48092 | Brick, Round Corner 4 x 4 Macaroni with 3 Studs Catalog: Parts: Brick, Round | 12579 |
| 5649 | Brick, Round Corner 4 x 4 with Slope 45 Edge without Studs Catalog: Parts: Brick, Round | 2 |