Structural wrench heads are offset from handle to permit clearance of obstructions. Handles are tapered to align bolt holes. Open end for easy engagement. Often called "Open Spud Wrench". Made of forged alloy steel. Industrial black finish. Made in U.S.A.3/4" Wrench opening. Head measures 1-9/16" diameter by 7/16" thick, 12" overall length. 13⁄16" Handle at head, 1-11⁄16" Offset at end.