ITEM NAME:30203 Taper Roller Wheel Bearings 17x40x12 X9H1 30203 Taper Roller Wheel Bearings 17x40x12 X9H1 Item: 30203 ball bearing Type: Taper Roller Wheel Bearing Size: 17mm x 40mm x 12mm it ables to carry radial and axial load in one direction simultaneously (cone + cup), Bearing is made of Chrome Steel. colour:Silver Material:Bearing Steel Package Contents:1 x ball bearing Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Item: 30203 ball bearing. Type: Taper Roller Wheel Bearing.