Description:

The ROP Shop replacement (Pack of 2) Idler Pulley for Chamberlain Power Drive 1/2HP 48930D, 7920KD Opener. Specs - Refer to images 2 & 3 for more information. Includes - (2) Chain Cable Idler Pulleys; comes as shown in the first image. Fits garage door openers with a square rail system. This idler pulley applies to tension to guide the chain cable through the end of the rail closest to the door. To make this repair to your garage door you will need a wrench set, a screwdriver and pliers to take apart and reassemble the housing.