Thick head for soft fittings. 7-1/2 degree Opening to slip over tube. 12 Point opening for quick indexing. Made of American alloy steel drop forged. Chrome finish. Made in U.S.A. 5⁄8" Wrench opening. Head measures 1-1⁄16" diameter by 1/2" thick, 7-1⁄8" overall length. 1/2" Slot width.