SKF Lug Locks install onto hub piloted wheel nuts and inter-connect to provide an early alert that a wheel nut has turned and is in need of re-torque. Heigth: 2.1728 in. Hole Size: 1.457 in. Number of Holes: 1. Length: 4.0842 in. Width: 0.5709 in. OE Numbers: Freightliner: CHR LL33MMBLU 60, CHR LL33MMGBLU 400, CHR LL33MMBLU 60