stainless steel reali-slim bearings, four point contact bearing type:four-point contact; bearing bore:3.5"; outside diameter:3.686"; weight:0.18 lbs; material:aisi 440c stainless steel with no seals or shields
Used on tf33 engine,a/c. seat-number 1 bearing seal i.d. 5.1200 min to 5.1219 max, o.d. 6.550 min to 6.570 max, width 0.599 min to 0.601 max in". materal is ams 6322 or ams 6323 steel.