1.Garage Door Jackshaft Chain Hoist,Roll Up Door Opener (1)Gear ratio: 4:1 (2) 41B36 Sprocket 1' bore (3)36'of 41# roller chain (4)26' of hand chain (5)chain keeper, 1/4' *1/4' 1 3/8' square key
2.Designed for both roll up doors and jackshaft garage door openers, easily lift large garage doors with ease.
3.Built with a high-strength chain design, this hoist is Sturdy and reliable, able to withstand heavy loads.
4.Works seamlessly with garage door cables to ensure safe lifting and lowering.
5.An ideal replacement for your garage door opener, ensuring smooth and Sturdy lifting for your roll up garage door or jackshaft opener.making it a great DIY project.
