Hi 🙂
If the bearings fit into a red coloured bearing assembly the bearings are
6306zz and 6305zz but Ive never been able to get a nongen bearing seal OCN55x2521
Hope that helps
carefull here as there are 2 of those red spiders, most take 6304 and 6305 with seal 55X3678.
But the 1600 (ie WFH1671) uses 6305 & 6306 with the seal 55×2521 as the other Mark points out. You need to post the model number to be sure.
Nice easy bearing job though! 😉