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Bearing | Kugellager 30,5x10x10mm with Kal. 4,5mm bb steelballs

After some trys to print a few different models of pip bearings I decided to give my 4,5mm steelballs from my softair a second sense in life :-) the balls have an actual size of 4.4 mm!! The bearing is not a normed one, because the balls…