Hamilton Ultra Maxi-Duty Dual-Wheel Swivel Caster with 20" x 9" Polyurethane Wheel with 2" Precision Tapered Roller Bearing
Bolt Hole 1: 12 x 12
Bolt Hole 2: 
Bolt Size: 0.75
Caster Rig Type: Integral Forged Kingpin
Caster Type: Swivel
Color: Platinum Enamel
Wheel Color: Thick Red Tread on Unpainted Cast Iron Center
Diameter: 20
Overall Height: 25.63
Top Plate: 14 x 14
Top Plate Length: 14
Top Plate Width: 14
Wheel Face: 9