Image | Item No. | Description | By |
| 3062 | Brick, Round 1 x 1 Catalog: Parts: Brick, Round | 112219 |
| 3062a | Brick, Round 1 x 1 - Solid Stud, Bottom Lip Catalog: Parts: Brick, Round | 2487 |
| 3062old | Brick, Round 1 x 1 - Solid Stud, No Bottom Lip Catalog: Parts: Brick, Round | 971 |
| 20952 | Brick, Round 1 1/2 x 1 1/2 x 2/3 Dome Top Catalog: Parts: Brick, Round | 2206 |
| 71076 | Brick, Round 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 1 Catalog: Parts: Brick, Round | 66 |
| 25214 | Brick, Round 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole Catalog: Parts: Brick, Round | 10314 |
| x12 | Brick, Round 1 x 1 with Ball (Finial) Catalog: Parts: Brick, Round | 325 |
| 4588 | Brick, Round 1 x 1 with Fins Catalog: Parts: Brick, Round | 881 |
| 71075 | Brick, Round 1 x 1 x 1 2/3 Catalog: Parts: Brick, Round | 98 |
| 3386 | Brick, Round 1 x 1 x 2/3 Half Circle Extended with Side Stud Catalog: Parts: Brick, Round | 23 |
| 33286 | Brick, Round 1 x 1 x 2/3 with Flower Edge (4 Knobs on Base) Catalog: Parts: Brick, Round | 220 |
| 77808 | Brick, Round 1 x 2 with Hollow Studs and Open Center with Bars Catalog: Parts: Brick, Round | 5 |
| 65473 | Brick, Round 2 x 2 D. 45 degrees Elbow (25.5mm Standing Height) Catalog: Parts: Brick, Round | 437 |
| 15395 | Brick, Round 2 x 2 Dome Bottom Catalog: Parts: Brick, Round | 9986 |
| 24947 | Brick, Round 2 x 2 Dome Bottom with Studs Catalog: Parts: Brick, Round | 5063 |
| 553 | Brick, Round 2 x 2 Dome Top Catalog: Parts: Brick, Round | 20999 |
| 553a | Brick, Round 2 x 2 Dome Top without Bottom Axle Holder Catalog: Parts: Brick, Round | 2549 |
| 20953 | Brick, Round 2 x 2 Sphere with Stud / Robot Body Catalog: Parts: Brick, Round | 22 |
| 3941 | Brick, Round 2 x 2 with Axle Hole Catalog: Parts: Brick, Round | 60882 |
| 92947 | Brick, Round 2 x 2 with Axle Hole and Grille / Fluted Profile Catalog: Parts: Brick, Round | 9096 |
| 17485 | Brick, Round 2 x 2 with Pin Holes Catalog: Parts: Brick, Round | 5247 |
| 27266 | Brick, Round 2 x 2 with Spikes and Axle Hole Catalog: Parts: Brick, Round | 5 |
| 30151 | Brick, Round 2 x 2 x 1 2/3 Dome Top Catalog: Parts: Brick, Round | 2825 |
| 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 | 7 |
| 30361c | Brick, Round 2 x 2 x 2 Robot Body - with Bottom Axle Holder x Shape + Orientation Catalog: Parts: Brick, Round | 1603 |
| 30361b | Brick, Round 2 x 2 x 2 Robot Body - with Bottom Axle Holder x Shape x Orientation Catalog: Parts: Brick, Round | 11 |
| 30361a | Brick, Round 2 x 2 x 2 Robot Body - without Bottom Axle Holder Catalog: Parts: Brick, Round | 15 |
| 4591 | Brick, Round 2 x 2 x 2 with Fins Catalog: Parts: Brick, Round | 692 |
| 49308 | Brick, Round 3 x 3 x 1 1/3 Dome Top - Open Stud Catalog: Parts: Brick, Round | 563 |
| 73111 | Brick, Round 3 x 3 x 2 with Recessed Center and Axle Hole Catalog: Parts: Brick, Round | 3 |
| 79850 | Brick, Round 4 x 4 Dome Top with 2 x 2 Recessed Center Catalog: Parts: Brick, Round | 7 |
| 6222 | Brick, Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Catalog: Parts: Brick, Round | 1341 |
| 87081 | Brick, Round 4 x 4 with Hole Catalog: Parts: Brick, Round | 5041 |
| 68325 | Brick, Round 4 x 4 with Recessed Center and Hole Catalog: Parts: Brick, Round | 1119 |
| 84866 | Brick, Round 4 x 4 x 1 1/3 with 4 Recessed Studs, Open Stud, and Pin Holes Catalog: Parts: Brick, Round | 94 |
| 65138 | Brick, Round 4 x 4 x 2/3 Dome Top with Hole Catalog: Parts: Brick, Round | 817 |
| 18897 | Brick, Round 6 x 6 with 4 Side Pin Holes and Center Hole Catalog: Parts: Brick, Round | 12 |
| 57587 | Brick, Round 7 x 7 x 4 Dome Top Catalog: Parts: Brick, Round | 345 |
| 3063 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch Catalog: Parts: Brick, Round | 6047 |
| 85080 | Brick, Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside Catalog: Parts: Brick, Round | 6205 |
| 3063a | Brick, Round Corner 2 x 2 Macaroni without Stud Notch Catalog: Parts: Brick, Round | 190 |
| 5152 | Brick, Round Corner 3 x 3 Macaroni with 2 Studs Catalog: Parts: Brick, Round | 2 |
| 65617 | Brick, Round Corner 3 x 3 x 1 without Studs Catalog: Parts: Brick, Round | 34 |
| 88293 | Brick, Round Corner 3 x 3 x 2 Dome Top Catalog: Parts: Brick, Round | 3097 |
| x1042b | Brick, Round Corner 4 x 2 Macaroni Double with Stud Notches Catalog: Parts: Brick, Round | 37 |
| x1042a | Brick, Round Corner 4 x 2 Macaroni Double without Stud Notches Catalog: Parts: Brick, Round | 20 |
| 2577 | Brick, Round Corner 4 x 4 Full Brick Catalog: Parts: Brick, Round | 252 |
| 48092 | Brick, Round Corner 4 x 4 Macaroni Wide with 3 Studs Catalog: Parts: Brick, Round | 3061 |
| 49612 | Brick, Round Corner 4 x 4 x 2 2/3 Dome Top Catalog: Parts: Brick, Round | 469 |