Interlocking formliners can be used to create fire rings, fountains, pillars, walls and just about anything else you want to form up. Two tools can be interlocked in a 24" column form, three for a 36", 4 for a 48" and so on. They are now available in 3 textures.
Three tools can be interlocked for a 36” sono tube and four tools for a 48” sono tube.
Ledger Stone Form Liner
River Rock Form Liner