Part number 999980 is a 10-piece set of open-end ET-style lug nuts with 7/16-20 right-hand thread. These conical seat nuts feature a 60° taper and extended thread shoulder to provide additional engagement on aftermarket or OE-style wheels. Made from heat-treated steel with a chrome finish, they are designed for applications that require a longer thread reach, such as slotted or deep-seat wheels. The open-end design accommodates extended wheel studs and allows easy inspection of thread engagement.

• Thread size: 7/16-20 RH
• Seat type: 60° conical (ET-style)
• Design: Open-end with extended thread shoulder
• Material: Heat-treated steel
• Finish: Chrome
• Quantity: 10 lug nuts