Porphyry kerb stones

Split or machined header, natural/sawn/machined flat side surface

They are porphyry blocks with exposed header and side, which are mainly used to delimit flowerbeds or pavements, but also to simply delimit surfaces and flooring.
The height of the exposed side can vary from 20 to 30 cm, while the length is random. The thickness is divided into three measurements: 6, 7 or 8 cm.
They are also available with flamed or flamed and coated header and surface.