Forged 6061-T6 aluminum wheel spacers and hubcentric adapters with CNC-machined surfaces and corrosion-resistant finish.Featuring precise hub bore,threaded studs,high-strength 10.9 grade bolts,cold-forged and heat-treated,SGS-tested for corrosion resistance.Available in multiple thicknesses as centric bore wheel spacers and forged hub-centric tire spacers.