These 3" steel garage door rollers are most commonly found on commercial doors with a 3" track. They feature 10 ball bearings, and are available with 4", 7", 9", and 11" stems.
Product Specifications:
- Garage Door Rollers
- 3" Inch Steel Rollers
- Stem Sizes Available: 4" Inch, 7" Inch, 9" Inch, 11" Inch
- Ball Bearings: 10-Ball
- 7/16" diameter
- Rating: 150 lbs. per roller at 50,000 12' door cycles
- For use with 3" track
- Sold individually