Kromski Minstrel Mahogany This beautiful, compact, portable wheel features a wide, steady base for the double treadle operation and the wheel, which is larger than many upright wheels Wheel: diameter 18" - weight 13 lbs. Orifice: height 33" - size 3/8" Bobbin size: full 4 oz. - 3 included Attached 2-bobbin Lazy Kate