The perfect spacer set for form fitting transition from headtube to stem (Upper outside diameter matches Syntace Megaforce2 stem).

Tapered outer profile.

Machined for minimal weight.

Set of 2 spacers, 10mm high each. 

Diameter inner: 1 1/8" (28.6)
Diameter outer: 38mm (top), 47mm (bottom)

Weight: 10.8g lower, 5.6g upper.