This is a 6-piece automotive fuel and air conditioning line disconnect tool set. These tools are designed to quickly and easily release the spring locking couplings on fuel lines, A/C lines, and transmission oil cooler lines. The set includes the most common sizes used in automotive repair: 5/16″, 3/8″, 1/2″, 5/8″, 3/4″, and 7/8″. Features 6-piece set with convenient storage rail Sizes: 5/16, 3/8, 1/2, 5/8, 3/4, 7/8 inch Durable plastic construction with metal inserts Made in the USA Patent number 5,455,995