Garage Door Opener LM Drive Worm Gear Kit Compatible With Sears Part 41A2817 Drive Worm Gear Kit for Sears Craftsman Liftmaster Chamberlain Garage Door Openers 1984-Current This listing includes: 1 Complete Drive Worm Gear Kit 1 Set of Instructions PRODUCT SPECIFICATIONS: Drive Gear Bore Size (Inner Diameter): 1/2" or .5" Drive Gear Outside Diameter: 2 3/4" or 2.75" Drive Gear Number of Teeth: 32
