Super lift's Bulletproof KEVLAR reinforced braided stainless steel brake lines are constructed of a PTFE inner bladder surrounded by a KEVLAR reinforcing braid. They're covered with a rubber sheathing, stainless steel braid, and an outer plastic sheathing for unmatched strength and protection from foreign objects. They also feature a steel leader at the end to make sure the lines are routed away from any moving suspension components.