Click to expand Tap to zoom Lang Tools 1213 3-7/8" 8 POINT HEX LOCKNUT SOCKET by Lang Tools Shop in-store. or at DarraghCompany.com Unfortunately, we are shutting down ToolCentral.com. Local customers can still shop online at DarraghCompany.com or in-store. Shop with Darragh SKU 607306 Additional Information Designed for use with a torque wrench when servicing truck wheel bearing locknuts. 3/4" square drive opening.