DUKE'S CRANK AND PIN BEARINGS WITH SEALS FITS STIHL 029 039 MS290 MS310 MS390

Seem like good quality

Bearings are made in China but seem to be of good quality. The original Stihl ones are from turkey. These bearings have steel bearing retainers while the OEM has plastic, so should be more robust. The crank seals seem good and identical to OEM, as well has hold their seal under a vacuum test. I cannot get attest to longevity as my saw is not running yet, but I am satisfied so far.