2" hard floor chair caster (soft wheel style) Hooded double / twin soft wheel design with 2" wheels for hard floors Barrel top style can match up to the bottom of most chair bases Fits into most chair bases with its standard 7/16" x 7/8" (11mm x 22mm) wire grip ring mounting stem Softer wheel style is better for harder floors such as hardwood, laminate, tile, plastic chair mats, etc. Great for use as new, replacement, or upgrade on your office chair base or with any of our chair bases. Black  **Note - Priced as a set of 5 pcs.  Order quantity according to your needs   Measurement Guide:  For more videos and instructions, see our YouTube channel.