Product review (5 stars): Fit perfectly.
For Maytag. Didn't know whirlpool and maytag were the same but there you go.  Parts fit perfectly.  Fixed squealing.
The little plastic retaining triangles broke on one of my roller wheels causing it to move the bushing over the groove in the shaft.  That sucker ate up that bushing.
The kit had the same little plastic triangles but they installed easily and work fine.
Belt was maybe an 1/8 inch narrower than original but was exact circumference. Worked fine.
Tensioner was exact match.
Rollers were different in appearance than original but same dimensions.
Only disappointment is in whirlpool/ maytag. My dryer is labeled a 'commercial' model.  We have 6 kids and that puppy runs all day.
I would think 'commercial' would have bearings instead of bushings and crap plastic clips.  This dryer is only 2 years old. Oh well.