Schioppa L12 Series, GL 312 UPE G, 3 x 1-1/4" Swivel Caster with Total Lock Brake, Non-Marking Polyurethane Precision Ball Bearing Wheel, 175 lbs, Plate 3-1/8 x 4-1/8" (Bolt Holes 3-1/8 x 2-1/4")