100%brand new and high quality.Descriptions:The high quality Metal wheel hub is designed for preventing the shaft from falling out and improving the precision For TRX-4 1:10 RC Crawler. Reduce the gap and closer to the wheel, extend the wheelbase by widening the width of the hex. The screws are included.Install onto front & rear outer case of the knuckles, this part does not appear in the original and it is sophisticated design for TRX4.Features:Products numer:12mm wheel hubMaterial:Aluminum AlloyHex size:12mmThickness:12mmColor: Black/RedEasy installation,good to use.Package Included:1set x 12mm wheel hub