Tuned Drums have many options:

Quick Close/Anti Tailgate Selectable Feature quickly secures gate and prevents unauthorized access

It is sold by the Pair

maximum profile dimensions

This is sold by the each

LiftMaster Std. Duty Roller Cage Bearing Hinge - Bolt to Gate, Bolt to Post (Black Powder Coat) Sold in pairs. Rollers Tuned Drums have many options:LiftMaster Std. Duty Roller Cage Bearing Hinge Bolt to Gate, Bolt to Post (Black Powder Coat) Heavy Duty Construction for Maximum Durability Dependable Roller Cage Bearing Design Even Weight Distribution Five Times The Weight Bearing Surface of the Nearest Large Hinge Convenient Bolt On Model Easy to Fully Lubricate Specifications: Maximum Gate Weight: Up to 1,000 lbs. per pair. Sold in pairs. Pair (2 per Box) 7. 2 lbs. 3. 2 kgs.