Nylon Rollers Commercial Grade 10 Ball Bearings- Pair2' in. roller nylon with ball bearings 4' in. stem 10,000 cycles of an 8' high door at 50lbs per roller Made of nylon and steel with a zinc plated finish Rated to open and close the garage at least 10,000 times

You can control up to two separate devices with it as it's mounted to your visor or attached to your key chain

Garage Door Key Release Entry Screws included with 2x keys

Experience reliability and longevity with our premium-grade cable drums

The Large Gear is 2 3/4" x 1/2" wide

11 x #1 Hinges 14 Gauge Heavy Duty - Wide Body Hinges

27" relaxed

Winds and unwinds onto a cable drum via a torsion spring to raise and lower the garage door

Maximum cable diameter 1/8

Garage Door Extension Springs for 7' High - Single Loop

Use sheet metal screws for metal doors (not included)

each cable measures 8

MAXIMUM CABLE SIZE: Our drums support cables with diameters of up to 5/32 inch