Schioppa L12 Series, GL 312 TP SL, 3 x 1-1/4" Swivel Caster with Wheel Lock Brake, Non-Marking Extra Soft Thermoplastic Rubber Wheel, 150 lbs, Plate 3-1/8 x 4-1/8" (Bolt Holes 3-1/8 x 2-1/4")