Description Create fire rings, fountains, pillars, and walls with these interlocking River Rock Form Liners. Complete your finished fire pit with Proline’s edge liners for a decorative edge on the top ring. Use two Half Tools (FLRR100H) to interlock the forms. For a flat top, use a Full Tool (FLRR100F) on top of a Half Tool, making your height 27″. FLRR100F (CURVED) 18″ X 40″ FLRR100H (STRAIGHT) 9″ X 40″
