1. The wheel has two additional thrust ball bearings in the cage that prevents them from falling out.
2. NAIERDI combined the elastic polyurethane with luminophore on the base of strontium aluminate which can radiate light at a level 20 percent. It increases the wheel’s wear, as well as makes the wheel glow in the dark and roll over cables.
3. The body of the wheel is made of heavy-duty tool steel and its shape is achieved by 3-times pressing at a temperature of 3000 ºC, that’s why the set of wheels can withstand up to 700 pounds.
Material: Steel and Polyurethane
Wheel diameter: 75mm – Approx 3″
Stem Length: About 22mm (7/8 inch)
Stem Diameter: 11mm
Color: Black and Blue
5 x Chair Wheels with Box
PROTECT YOUR FLOORS AND MONEY
No more scratches on your lovely floors from old plastic caster wheels. These high-quality soft polyurethane chair rollers cause no damage to any types of flooring – wood and hardwood, laminate, vinyl, tile or short-hair carpet.
PERFECTLY SOFT AND QUIET ROLLING.
Two precise bearings and a wheel-shell made of soft polyurethane ensure fast and quiet wheel-rolling on any surface – without any noise.
RELIABLE HEAVY DUTY CONSTRUCTION
Heavy-duty solid steel stem and frame, and a strong plastic rim that withstands loads up to 700 lbs for all 5 metal chair casters.
EASY TO INSTALL
No tools needed! Installing this office chair wheel set is simple – just push them into the allotted slots, and you’re done!