Product Description Sapim nipple washers increase the strength of the rim and reduce friction between nipple and rim. Technical Information:Type:spoke head washersShape:oval, largeOuter Diameter:11-19 mmHole:5.5 mmThickness:0.6 mmFeatures:for single wall rimsencircles the spoke hole in the rim wellincreases stabilityContents:100 x Sapim oval washers Manufacturer: Sapim N.V. Mechanicalaan 6-8 2610 Wilrijk Belgium info@sapim.eu