About this item

• ?Standard 5/16" with 18 TPI,Coarse Thread (US): The stud diameter is 5/16",stud length is 0.79"(20mm), and our size is imperial,not metric. If your wheel is metric,M8(8mm) or M10(10mm), this wheel doesn't fit you,pls don't add to cart.
• ??Our Office Chair Caster Wheels are made from crystal clear,soft polyurethane.This provides better combination of durability ,softness and sleek surface. No longer scratch and mark on hardwood, laminate, tile,carpet,bamboo, pergo,vinyl plank and more.
• ??ENJOY SMOOTH & QUIET ROLLING - Remain focused and relaxed with the help of these caster wheels. Precision ball bearings in the caster swivel and axel provide smooth, easy rolling while causing no squeaky sounds or noise of any kind.
• Fit for 95% Office Chair??Soft polyurethane chair rollers are suit for 95% office chair,perfect for standard Herman Miller Aeron chair,big and tall executive office chair,NobleChair Epic gamer chair,Z-line chair,basic mid-back office chair and more
• EASY TO INSTALL - Simply screw your old casters out, then screw the new wheels in, fit for various 5/16" caster chairs