Hamilton Extra Heavy Duty Dual-Wheel Rigid Caster with 8" x 3" Plastex Phenolic Wheels with 1" Straight Roller Bearings
Bolt Hole 1: 4 1/8 x 6 1/8
Bolt Hole 2: 
Bolt Size: 0.38
Caster Rig Type: Weldment
Caster Type: Rigid
Color: Crimson Powder
Wheel Color: Black
Diameter: 8
Overall Height: 10.5
Top Plate: 5 1/2 x 7 1/2
Top Plate Length: 7.5
Top Plate Width: 5.5
Wheel Face: 3