Hardest Species of bamboo ever discovered. Harder than Chinese Moso bamboo. Harder than Oak and Maple. Withstands 2,048 lbs on Janka Ball test. Cross-laminated (cross-hatched) for maximum stability. Can be floated, nailed or glued down installation. 50 year warranty on our Aluminum-Oxide finish. 6' planks for a more refined installation. Square edges. No “V-grooves" to trap dirt and water. Precision milling for a tight, positive fit. Rubber wood core with expansion joints. Standard dimensions: 7 1/2 x 72 x 9/16 or 5 3/4 x 72 x 9/16 . Full line of transition moldings available