Universal Bedframe with rug rollers(wheels on the outside to roll like A Wheelbarrow). Easily Adjusts to Fit Cal King, King, Queen, Full XL, Full, Twin XL and Twin Mattresses. Four 2-1/2" Extra-Wide Rug Rollers, Two Locking 2-1/2" Double Rail Center Support Bar with Two Support Glides. Universal Headboard Brackets and Gunmetal Black Matte Powder Coating. Easy Assembly in Under 10 Minutes - No Additional Tools Required.