Bovidix 6166810 Ratcheting Offset Box Wrench, 5/16-Inch x 3/8 Inch Box-end Spherical Reversible Ratchet Wrench (45 Degree Offset), Inch - 5/16" x3/8" Unique, patented, Spherical Drive Wrench fits 6 different types of fasteners Chrome-vanadium steel and special heat treatment process provides high strength and durability 45 degree offset head gives excellent access to hard to reach areas Industrial grade tools