Rim, aluminum 'Hochschulter' - 2.15 x 18" - 2x cross (Excel) ►see details !!

Spokes: M4

Inside = 2.15" = WM3 = 55 mm

This aluminum rim was originally designed for the 1x cross spoke pattern.

Because the spoke holes are now drilled for the 2 x cross spoke pattern, the holes are not perfectly aligned with the "bulges" in the rim.

See picture.