Mistakeproof stem selection - includes 5 wheels and 10 stem fasteners (5 each 3/8"D x 1"L) (5 each 7/16"D x 7/8"L) for all metal-base chairs
Full hood design - 2"D oversized neck, weight rated 100lb. per wheel
Determine correct stem diameter by removing a caster from the leg of your chair base. Match diameter of existing stem and insert into caster body- Discard the other five fasteners
Comments about HON® Volt™ Task Chair with Dual-Action Synchro-Tilt, Black:
I bought this chair from Staples about 6 months ago. My version also has the arms. It's comfortable, rolls smoothly and comparable to the comfort of more expensive chairs (i.e. Herman Miller). Great value considering the good quality and construction.