Hamilton Zinc Plated Cush-N-Aire Swivel Caster with 18" Pneumatic Air-Filled Tire with 1" Precision Tapered Roller Bearing
Bolt Hole 1: 4 1/8 x 6 1/8
Bolt Hole 2: 
Bolt Size: 0.5
Caster Rig Type: Integral Forged Kingpin
Caster Type: Swivel
Color: Bright Zinc Plated
Wheel Color: Black Tire on White Rim
Diameter: 18
Overall Height: 21.25
Top Plate: 6 1/8 x 7 1/2
Top Plate Length: 7.5
Top Plate Width: 6.13
Wheel Face: 5.75