Garage Door JR Jackshaft Mounting Chain Drive Hoist 1 1/4″ Shaft 4:1 Reduction 4020V

• Jack shaft mounting
• 4:1 reduction
• Includes sprocket, 22″ of #41 roller chain, 26′ of hand chain, 1 chain keeper, 2 shaft collars, 1 wall bracket and a 1/4″ key
• External chain, sprocket drive