Bullet Wheel Installation Kit adds Retro styling with security too! The Kit includes 16-Bullet Lugs, 4-Bullet Locks, 1-17mm Socket, 1-Socket Lock. The Bullet Lugs are beautifully chromed 0.800 Diameter and 1.75" long and use a 17mm Hex Socket. Lug nuts are made from quality carbon steel and each piece meets or exceeds industry standards.