2 Pack, 1-5/8", Black Twin Wheel Stem Caster, 02 Stem Size 5/16" x 1-1/2", 40 LB Load Capacity, Twin Wheels Place More Wheel Surface On The Carpet Pile, Wheels Move In Opposite Direction To Minimize Carpet Fiber Twisting, For Use On Ready To Assemble Furniture, Office Chairs, Printer Stands & Entertainment Centers.