Fangrui Product Details Complete Kit For Easy : This Comprehensive Drive Gear And Worm Gear Kit Is Essential For Maintaining Optimal Performance Of Your Garage Door Opener. It Includes Both Gear And Worm Survival Gears To Smooth And Reliable Operation. Recommended To Both Gears Simultaneously For Results. Extensive Compatibility With For Models: Ensures Compatibility With A Wide Range Of For Garage Door Openers Including Models 13953614sr, 139536151sr, 13953615sr, Up To 1395399011 And More. Match For Restoring The Function Of Your For Setup And Improving Door Lifting Speed And Efficiency. Fits Multiple For Models: Designed To Work Seamlessly With Numerous For Garage Door Opener Models Such As 41a2817, 1100, 7200, 248735, Hd620ev, Pd100 Among Others. Trust This Kit To Renew Your For System For Smoother Entrance And Exit In Your Garage. Designed For Systems: Compatible With A Multitude Of For Models Including 41a2817, 41c4220, 1045-9, 1050-6, 1355, 2245 And More Ensuring A Broad Coverage And Versat