Product review (5 stars): Perfect replacement kit to fix those noisy friction wheels.
The kit includes both the front and back wheels, the idler puller, triangular retainers and the drum belt.  It was a perfect fit for my Sears Elite dryer.  Dyers are surprising easy to disassemble and reassemble.  The dryer drum must be removed, is light but a little cumbersome.  It's a one person job to disassemble but it does help to have a second body to hold the drum in place while you align the belt and position it over the idler pulley and arm.  It also helps to have someone hold the drum when reinstalling the dryer front, to ensure the drum is properly aligned on the friction wheels.  Total job to do the overhaul (including vacuuming out the dryer interior) is about 1 hour.