It’s often the small gaps and joins that take the longest to finish neatly. This 18x18mm Pine Quad is made for that sort of work. Its rounded face can sit neatly along an internal corner, against skirting or wherever two surfaces meet and need a cleaner finish. Being 18mm on both sides also makes the size easy to work out before you start cutting. As it’s real pine, expect the grain and natural markings to vary a little between lengths. Measure the full run before ordering, especially around corners. Those short offcuts add up quickly when you’re working your way around a room.