Vimax Open End Aluminum Extended Tuner Wheel/Lug Nuts Set 12mm x 1.5mm Black (Set of 20) Open end aluminum extended tuner wheel/lug nut set with key Each lug nut weighs just 1.83 ounces Unique Design help preventing wheel from scratch Extended 48 millimeter length open ended design with knurled ends; can be removed with a 17 millimeter socket To prevent scratching when installing lug nuts, make sure to install and tighten all nuts by hand as much as possible before sliding on the provided socket. Power tool/air tools are more likely to scratch lug color then a standard wrench