... 12 E.G. :1205K b) "H", adapter sleeves.The combined unit is for K series bearnigs. E.G. 1205KH 6) ... brass cage4) Precision: P0, P6,p55) Suffixes: a) "K", ID of bearing with tapered ,the taper is 1:12 ... E.G. :1205K b) "H", adapter sleeves.The combined unit is for K series bearnigs. E.G. 1205KH b ... ) "H", adapter sleeves.The combined unit is for K series bearnigs. ...