HOLKIE 4 inch Spring Loaded Gate Wheel,2Pack Heavy Duty Swivel Gate Caster Wheel for Wooden Gate and Fence 220 LBS Load Capacity,Black

Features:
Spring-loaded design for better handling of uneven surfaces
360-degree swivel head for easy gate movement
High-quality TPR material to prevent wear and cracks on the rollers
Rust-free galvanized bracket for extended lifespan
Maximum load capacity of up to 100 kg per wheel
Ideal for driveways, farms, houses, etc

Assembly Instructions:
Attach the wheels with the brackets
Properly compress the spring and mark the holes
Drill 5/16"(8mm) holes for the screws at the marked position
Attach the rollers with the provided screws in the bracket and then on the door

Notes:
1. To prevent the wheels from hanging in the air when driving on a concave surface, you need to press the spring down to load it before determining and marking the hole positions.
2. Install the gate roller as far away from the door hinges as possible for the most effective performance.

Package Contents:
2 x Gate roller with spring loading
6 x 90mm*M8 screws
6 x M8 nuts
6 x washers