Image Item No. Description  48092  Brick, Round Corner 4 x 4 Macaroni Wide with 3 Studs Catalog: Parts: Brick, Round  47974  Brick, Round Corner 4 x 8 Full Brick Double Catalog: Parts: Brick, Round  47974c01  Brick, Round Corner 4 x 8 Full Brick Double with 2 Fixed Rotatable Friction Pins Catalog: Parts: Brick, Round  47376  Brick, Round Corner 12 x 12 with 3 Support Pegs Catalog: Parts: Brick, Round