12 gauge (2.6mm) spoke nipples for 6mm dia rim holes. E = 12g spoke (2.6mm). Spoke key required is 5.0mm A/F. A = 9.48mm.
The Lord of the Tools 80pcs Bicycle Spoke Nipples 2.6mm Mountain Bike Spoke Nipples Wheel Spoke Nipples for Bicycle Motorcycle Electric Vehicle 13mm/12g Silver
6 x SAPIM BRASS SPOKE NIPPLES for 13 GAUGE - 2.3mm fits wide 4mm RIM EYELET HOLE
6 x SAPIM BRASS SPOKE NIPPLES for 13 GAUGE - 2.3mm fits wide 5mm RIM EYELET HOLE
Ruimou 100Pcs Bicycle Spoke Nipples, for bicycles, mountain bikes, electric vehicles, motorcycles, mountain road bikes inner diameter 2.6mm 12G spokes (Silver)
13G PILLAR Nipples - 13G thread with 14g head for 4mm rim hole - Silver ebike
VBESTLIFE Bicycle Spoke Nipples, 80Pcs Iron Bicycle Spoke Hats 14mm Spoke Nipples for 14G Spoke Wire(Blue)