Most complete Alden Wrench set with sizes: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" and 13/16" Combined with same size open wrench to break loose or measure fastener size accuracy No skip size; most complete size progression Made of 17-4 Stainless Steel and resists corrosion No chrome nor cadmium plating for aerospace use compliance The Alden Wrench ProPack Set was designed for the professional technician. It has evolved through years of use and feedback from professional mechanics. Each wrench has two heads of the same size. On one end is the Alden 30 degrees open ratchet and the other head is a regular open wrench. The purpose of the open end is to break loose an over tightened or frozen fasteners, although, in most cases, the Alden Wrench ratchet head gives more than enough torque to open normally tightened fasteners. Secondly, to measure the size of the fastener prior to attempting to use the Alden ratchet. These fasteners once loosened can be removed with the speed of the Alden Wrench open ratchet.
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