HEAVY DUTY CASTER WHEELS: Moving smooth, the load capacity for each casters is more than 150lbs. Plate Size: 1.9” (49mm) x 2.7” (70mm). Hole center to hole center: 1.3” (35mm) x 2” (52mm). 0.33” (8.4mm) x 0.44” (11mm)). Overall Height: 2.7” (70mm). Caster Wheel Diameter: 2" (50mm). Caster Wheel Width: 0.9" (23mm). Caster Wheel Material: Polyurethane. Caster Wheel Color: All Black. SMALL and STRONG, SUPER LOAD-BEARING: The caster wheels non swivel made of the popular Non-Marking polyurethane rubber type, very quiet running, absorbs shock and vibrations. Saving of time and labour. These powerful caster wheels can be used for a multitude of small or big projects. NON-SWIVEL FIXED CASTER: This Rigid caster has a top plate attachment with a rigid and wheel assembly which permits only straight-line movement. Silent and no noise rolling, so don’t worry to disturb others when moving your devices. Smooth & Silent & Sturdy. Capacity: 150lbs each. WIDELY USED: Can be used in both industrial and residential applications, for coffee table, plant stands, bookshelves, shoe bins, toy bins, shopping carts, workbench, warehouse or supermarket shelves, they can be installed to most devices if you want. Includes: 12 casters 2 inch rigid fixed non swivel wheels.