3/8 in. Drive Crowfoot Flare Nut Wrench Set includes 10 pieces of all sizes between 10mm and 22mm--the most common sizes used for automotive repair. Each wrench is made with drop forged alloy steel and designed with an open side and a 15-degree offset at each end. This set comes mounted on a storage rail for convenient transport and storage. Includes 10 Crowfoot Flare Nut Wrenches from 10, 11, 13, 14, 15, 16, 17, 18, 19, 22mm Open side at each end allows for easy access over lines and tubing while still providing 5 sides for a maximum on fasteners 15-degree offset provides clearance for your fingers and other obstructions near the fastener Drop forged alloy steel material provides strength and comfort Comes on a convenient storage rail for transport and storage