7 Poly lead shank with 24 chain. A long rope somewhat like a lead rope that attaches to the horse's halter and can be used to lunge the horse. Sometimes called a lunge rein. This Lunge Line With Chain is one of many top quality items in our Horse Leads department. Features:. Color: Blue. Unit: each. Dimensions (L x W x H):0.54 x 0.41 x 0.44. Great Gift Idea.