20" MAGNUM (CASSETTE) - Features: Sealed Bearings in a 6061 Alloy Body w/ Low & Thick Flanges w/ CNC Machining to Reduce Weight Hand-laced to a Chamber Welded Seam Multi Chamber Rim. - Axle: 14mm chromoly. - Driver: 1-pc chromoly Flip Flop RHD or LHD. - Hardware: Steel (17mm wheel nuts). - Spokes: 183mm (3X) Black w/ Black Brass nipples. - Drilling: 36H only. - Color: Anodized Black.