MERCURY Ring Doubling Frame 248 to 544 Spindles machine - 75 mm Gauge - 2" Diameter Ring - 8" to 10" Lift - 45 mm Diameter Calender Roller with hard chrome plated - 50 mm Diameter Top roller with hard chrome plated - M type thread stop motion - 10" Light weight ABS pulley - Double jocey pulley drive for S & Z twist - 6 Line Cone or 3 line Cheese creel and all other specifications as per standard