1.780" Round bore heavy duty disc harrow bearings are made with tripple lip seals to protect from corrosive environments. This seal is a one piece shroud cover with three molded contact seals. Relubricable. Fits for for SUNFLOWER 1543 Disc. This bearing is also known as: FAFNIR#: GW211PP37 PEER#: GW211PP25 BCA: DC211TTR21 Sunflower OEM#: SN3091 Dimensions: Bore: 1.780" Round O.D.: 3.937" Flat Re-Lube I.R width: 1.750" O.R width: 1.312" weight: 2.91 Lbs