About the Origami Heavy Duty Wheels:

• Tested to increase weight per shelf (with wheels) to 100 Lbs. (Max Per Shelf)
• Set of four professional 3" swivel casters for Origami Storage Racks; 2 wheels with butterfly lock function
• Compatible with our R3, R4, R5, and R6 Origami Racks; not for use with our RB or R1407 bookcase family
• Included Items: Set of 4 Wheels, Hardware, and installation instructions
• Threaded Stem Size: 0.38" Diameter x 1" Long
• Wheel Size: 3" Diameter x 1" Thickness

Why you need it:

Gain more flexibility with these four set of 3-inch professional swivel casters. Two wheels come with butterfly locks for more stability. Roll your racks from room to room with more ease! These larger wheels are more durable and reliable to allow ease in mobility for heavier loads on your racks.