Product Description  These Office Chair Caster Wheel are made to protect hardwood in your office, and it is also suitable for the carpet. It can protect the hardwood from damage and scratches. With 360 degrees rolling, the replacement caster wheels can relieve the force on floors effectively. Advantages - The rubber caster wheels can protect wood, hardwood, laminate tile. - frame, stem and wheel axle all made of high-grade steel. The Stem casters are made of durable polyurethane. - Heavy duty and durable - Fits 99% of office chair casters standard stem size sold in the USA Dimension Details: - Material: PU (polyurethane)- Caster Stem Type: grip ring- Stem Diameter: 7/16"(11mm)- Stem Length : 7/8" (22mm) - Load Capacity: 300 lbs in total Package Includes:   - 5 x office chair casters Installation Step  - Step 1: First tear down your original Chair caster, roll along the counterclockwise and set it aside forcefully; - Step 2: then Add a little lubricating oil on the interface, roll the stem caster along the clockwise and insert it forcefully. Frequently Asked Questions: Q :Do these fit the herman miller aeron task chair? A :Yes, exactly Q :Are these casters universal? How do I know they'll fit in my current chair? A : The 5pack stem caster wheels have 7/16" (11mm)stems on them ,Stem Length: 7/8 in (22 mm) and will fit all chairs that take that stem size. Q : Do these wheels have a lock function? A :Unfortunately no locking mechanisms. Q : Do I need some other tools to install these wheels? A :No tools needed at all. Just pull out your old wheels and pop these right in.
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