Image Item No. Description  20952  Brick, Round 1 1/2 x 1 1/2 x 2/3 Dome Top Catalog: Parts: Brick, Round  20953  Brick, Round 2 x 2 Sphere with Stud / Robot Body Catalog: Parts: Brick, Round  20953  Brick, Round 2 x 2 Sphere with Stud / Robot Body Catalog: Parts: Brick, Round