Sapim brass BLACK finish spoke nipples to fit 13g (2.3mm) spokes.
Black colour 14mm long 4mm diameter nipples to fit drilled rims with holes of approx. 4.3mm.
The nipples fit standard 4mm rim holes, they are sometimes referred to as reduction nipples. (BAT)
Various quantities available from the drop down menu.
Unbranded wheel building products of unknown quality, may end up costing you more!