When these bushes wear they can cause clonking and 'strange' handling and can display as worn wheel bearings.
Once this bush is pressed in and inner steel tube slid in place, re-fit the arm, no need to drill out arms or fit different bolts
Toyota will only sell the rear hub complete if this bush fails!
X1 Spherical Bush
X1 Bush Sleeve
*Note X2 Bushes and sleeves required per car