For MS: M6100/M7100/ M8100/M9100(SHMINAO 12s）. XD: XG1275/ XG1299/（AXS,for XX1,X01, for GX). Structure: 2 Sealed Bearings, 6 pawls. Made of high-quality materials, and practical. 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.