This lug has a 1/2 in Stud Size, a 0.484 in (12,3 mm) I.D., and a 5.500 in (139,7 mm) length
The 3M™ Scotchlok™ Aluminum Two Hole Lug 40141 is for use with copper or aluminum conductors. These aluminum lugs feature color coded end caps for identification. Contact aid provided in the lug barrel is compatible with poly/EPR insulations.