Enduro Max Sealed Cartridge Bearing Wheelin' and Sealin'Enduro Max Cartridge bearings. 90% filled with Mobilux NGLI 2 synthetic grease, dual-lip labyrinth seals, a full complement of bearings, and up to 45% increased load capacity Manufacturer Number: 808Bearing I. D. : 8 mm Bearing O. D. : 22 mm Bearing Thickness: 7 mm Manufacturer Number: 898Bearing I. D. : 8 mm Bearing O. D. : 19 mm Bearing Thickness: 6 mm Manufacturer Number: 7901Bearing I. D. : 12 mm Bearing O. D. : 24 mm Bearing Thickness: 6 mm | Enduro | Max Sealed Cartridge Bearing Enduro | Max 7901 Sealed Cartridge Bearing