Aero Spoke Holder 1.0-1.3mm Application: This tool is used to hold aero spokes (flat-shaped spokes) in place to prevent them from rotating when tightening or loosening the nipples on wheels that use aero spokes. Features: Unlike circular spoke holders, this tool, when used with a DT SWISS nipple wrench, can firmly grip the spoke near its base. There are minor scratches, but it functions without issue.