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.
Sapim 12g | 2.6mm Stainless SILVER bicycle spokes & 6mm nipples ebike
12g (2.6mm) Sapim Stainless spokes & 5mm nipples SILVER custom lengths ebike
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12g (2.6mm) Brass spoke nipples (5mm Clearance) Nickel plated 14.5mm long ebike