Prices for material not in stock is subject to change due to copper market price fluctuations. This is for Enduroguard Part Numbers 26501802 18-2, 26501803 18-3, 26501804 18-4, 26501805 18-5, 26501602 16-2, 26501603 16-3, 2650604 16-4, 26501605 16-5.