Oak is a strong hardwood with a long, linear grain, often displaying tiny rays. Oak, at times, has small pinholes and tight knots. Oak coloration can range from a golden blond to deeper tones. Because of its open, intriguing grain, Oak is considered a good hardwood for painting. When painted, its grain will be visible and tactile. Due to the open grain inherent to Oak, 100% stain penetration cannot be achieved and sometimes unfinished portions of the grain will be visible when viewed at an angle and under magnification. Due to natural variations inherent to the species, stains on Oak will not produce a single, perfectly uniform color tone. There may be regions of moderate color variation, even within a single piece of Oak. This is considered to be due to the natural variation inherent to wood, and is part of wood’s natural beauty.