Certainteed plastic pivot lock shoe used with coil balance spring and cover.

Certainteed had 4 generations of this shoe, all are interchangeable.

The new style has a metal cam and protruding tabs on both sides of pivot block. 

New style may have a larger hole than previous shoe with plastic cam.

All Certainteed Window parts sold individually or as pairs

Coil spring is attached with  #8 x 3/8  Phillips pan head screw - Not included

Please review other images - Click on image to enlarge.

Priced and sold each.

Removing & Installation of Pivot Lock shoe:

The pivot lock shoe fits tight in the side jamb, a slight twist from back to front on one side will generally get the shoe out.  Reverse the process when installing.

If the Shoe slides hard in the channel, remove the 4 protruding tabs with toe nail clippers, then reinstall.