Structure: 2 Sealed Bearings, 6 pawls. XD: XG1275/ XG1299/（AXS,for XX1,X01, for GX). Material: Aluminium alloy AL7075. for MS: M6100/M7100/ M8100/M9100(SHMINAO 12s）. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.