The halter design made of rope also has the same basic sections, but usually is joined by knots instead of sewn into rings. Most designs have no metal parts, other than, in some cases, a metal ring under the jaw where the lead rope snaps, or, occasionally, a recessed hook attachment where the crownpiece can be connected. However, in many cases, a loop is formed in the left side of the crownpiece and the right side of the crownpiece simply is brought over the horse's head, through the loop and tied with a sheet bend.