Durable Materials: Our 25-piece fuel line disconnect tool kit is crafted from premium aluminum alloy and plastic for long-lasting durability. 1 Quick Disconnect Tool Set (25PCS). Multi-Size Tools: Our tools can disconnect 1/4″, 5/16″, 3/8″, 1/2″, 5/8″, 3/4″ and 7/8″ fuel lines, suitable for a variety of pipe fittings and vehicle models.