Red Box Elder Wood Turning Pen Blanks | Wood Pen Blanks 5 Pack | 3/4" X 3/4" X 5" Small mill sourced - Salvage and sustainable harvested woods Beautiful light red streaks. Sapwood is a pale white, sometimes with a yellow/green hue similar to Yellow Poplar. The heartwood is a grayish/yellowish brown, frequently with red or pink streaks. The red coloration is due to a pigment found in a fungus (Fusarium negundi) that commonly afflicts the tree. Grain is straight, with a fine even texture. The growth rings are usually faint and non-distinct. Wood and sawdust of Red Box Elder wood are known to cause irritation of the eyes, nose, skin and lungs, and may stimulate allergies and asthma - precautionary measures are advised... a good dust mask is essential.