This is a genuine ALCOA brand Hug-A-Lug 33mm hex shaped push on flanged wheel lug nut cover with interior metal clips for hub pilot wheels. This cover works with 33mm hex shaped lug nuts with a height of .886 - 1.00 inches and a maximum stud stand out of 1.95 inches. The interior metal clips allow for easy installation and hold on tightly to the lug nut. Alcoa premium nut covers are designed with a highly reflective finish to dress up and protect any rig. Easy to securely install – just snap on and snap off. These quality nut covers will keep your ride looking its best. Designed to fit over 33mm hex nuts for hub piloted wheels. Alcoa Wheels designed the first forged aluminum truck wheel in 1948 and Alcoa represents more than 120 years of experience in the production of aluminum along with more than 60 years in forged aluminum truck wheels and accessories. Their automated production lines guarantee quality standards that meet the most demanding demands of heavy transport. Rest assured that Alcoa products will keep you running down the road.