twin hook type of rotating hook single and double knot netting machine ZRD Series of Twin Hook Type of Rotating Hook Single and Double Knot Netting Machine Main Technical Standards Item/ModelZRD8-520ZRD8-630ZRD9.5-520ZRD11-420Knot typesingle doublesingle doublesingle doublesingle doublePitch(mm)889.511Width(number of meshes)520630520420Diameter of reel(mm)136/150136/150160/170210nylon ...