AH113  6" Power Wheel II are the finest choice available for high-traffic, commercial sliding gates track applications.

• Designed for gates up to 5,000 lbs.,
• Maintenance-free (no grease fittings)
• 30% more torque transfer than cast iron or plastic wheels.
• Manufactured by a computer-controlled lathe machine
• Each v-groove wheel is made from solid, cold-rolled steel
• One 0.625 in. x 3.25 in. bolt with nut included

Precision machined wheels w/sealed ball bearing, comes w/axle bolt and nut. 
Silver anodized finish. Cold rolled refers to the hardness of the wheel, this wheel should be considered "heat treated hardness" and is only recommended for high cycle