Woodland Scenics Surface Ready Rocks – WS-C1140 Each precast plaster and hand-painted rock is unique. Use Surface Rocks to model riverbeds, plateaus and anywhere flat rocks are needed. Includes 18 Surface Ready Rocks. Simply Attach To Any Layout. Rocks Range From 1-1/2″ To 3-1/2″. This item is intended for modelling use and is not a toy. Actual product may vary slightly from the pictures shown.