As the name implies, Sapim Strong spokes are built for heavy duty applications such as tandems, E-bikes, or cargo use with larger 13g hub holes13g/2.34mm at the spoke head with single butting down to 14g/2.0mm on the body of the spokeJ-Bend2.34/2.0310mmSingle SpokeSilverNoUPC/EAN/GTIN: 5400540152545