Product Description Replacement bearing for FSA Orbit Xtreme Pro headset (top and bottom). Specifications:Dimensions (Inner x Outer x Width):30.2 mm x 41.0 mm x 7 mmDesignation:MR062Models:universal: Design:angular contact ballRecommended Use:headsetBall Material:steelSeals:2RSCompatibility:Orbit Xtreme Pro (1 1/8" )Features:Type TH-874S45° angle (inside)Manufacturer Number:160-6290 Contents:1 x FSA TH 874S MR062 bearing Manufacturer: F.S.A. S.R.L. Via Francesco Petrarca. 4 20123 Milan Italy info@fullspeedahead.com