How to confirm whether it matches your seat needs to pay attention to the following four aspects. 1、Upper interface requirements: Top thread of spindle: m8 2、Shaft Diameter: 26mm 3、Cone Ratio of shaft: 1:13 4、Requirements for base connection: 4 holes and the diagonal spacing of holes is 115mm. And please bring four m6 nuts Package Included 1*Chair Hydraulic Pump( no chair).
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