8 Large All Steel Swivel Plate Caster w Brake Lock Heavy Duty 3.5" Wheel Rotate 360 degrees. The side brake locks the wheel Capacity: 350lbs each. Plate Size: 2.5" (63mm) x 3.5" (90mm) Hole center to hole center: 1.7" (44mm) x 2.8" (72mm). Mounting hole dimensions: 0.39" (10mm) Wheel Dia.: 3.5" (89mm). Wheel Width 1.2" (30mm). Wheel Material: Iron Overall Height: 4.5" (115mm). Includes: 8 Pack 3.5" caster wheel with brake