Rhino Diamond Plate/Knobback 3' x 1-1/8" x Lin. Ft. (up to 75') Anti-Fatigue Mats [ DTK36Y ] Rhino Diamond Plate/Knobback 3' x 1-1/8" x Lin. Ft. (up to 75') [ DTK36Y ] - Visit http://rhino-mats.com/anti_fatigue_mats.html to view color options. Let us know your color choices at checkout.