Blade chair casters features

• Better technology - molded polyurethane blade wheels, precision ball-bearings, and high grade steel axles and support frames—these casters are a step above traditional hard plastic models. Elevate your seating experience with better mobility, comfort, and ergonomic movement

• Set of five casters - sold in sets of five to accommodate five-spoke chair bases

• Smooth ride - blade wheel design and high precision ball-bearing core make chairs roll smoothly on hard floor surfaces and low pile carpet

• Roll over rough terrain - improved rolling over obstacles and uneven surfaces

• Quieter - wheel material, ball-bearings, and size all decrease noise

• Won't scratch - ball-bearing swivels and wheel material prevent hardwood floor scratches, unlike hard molded plastic casters

• Durable design - molded polyurethane blade wheels and steel components

• Chair lift - 3" diameter wheel adds about 1" of height to chair depending on chair's old caster size

• Looks great - clean, modern form meets high function

• Universal size - standard 11mm diameter and 22mm long caster stem is compatible with most chairs and brands, including all UPLIFT Ergonomic Office Chairs

• Press-in installation - no tools required

• ANSI/BIFMA X5.1-2017 - meets rigorous performance requirements

• 15-year warranty - all UPLIFT Desk products include a 15-year warranty