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Five black twin-wheel casters with silver threaded stems and brake levers

Unique-Bargains

Unique-Bargains 2 inch Twin Wheel Brake M8x15 Threaded Stem Swivel Casters 5pcs

SKU CH-EVJV-QB155

Twin-wheel casters with M8×15 mm threaded stems, 360° swivel, brakes and 44 lb per-wheel capacity protect floors on office chairs

  • TypeChair & Furniture Accessories
  • Smooth quiet rolling with 360° swivel action
  • Twin-wheel design protects carpets and hard floors
  • M8×15 mm threaded stem fits standard office chairs
  • Each caster supports 20 kg load capacity
  • Brake locks wheels securely when stationary

Replacement Casters for Office Chairs

These 51 mm twin-wheel casters replace worn or noisy wheels on standard office chairs. They suit home or office seating where smooth, quiet rolling and floor protection are needed. The M8×15 mm threaded stem fits chairs designed for that mounting pattern. Buyers whose chairs use a different stem size or a grip-ring mount cannot use this set.

Brakes Add Stationary Stability

Each caster includes a brake that locks the wheel when engaged, keeping the chair in place on hard floors or low-pile carpet. The zinc-alloy stem and plastic wheel construction deliver a 20 kg per-caster rating, with a practical four-caster load of 60 kg calculated on three-point contact. The set supplies five pieces, giving one spare for future replacement.

Simple Threaded Installation

Installation requires screwing each M8 stem 15 mm into the chair base until secure; no tools beyond hand tightening are typically needed. The 360-degree swivel operates freely once mounted. Problems usually arise when the chair’s existing holes are stripped, undersized, or use a different thread pitch, preventing a firm fit.

Highlights

  • Smooth quiet rolling with 360° swivel action
  • Twin-wheel design protects carpets and hard floors
  • M8×15 mm threaded stem fits standard office chairs
  • Each caster supports 20 kg load capacity
  • Brake locks wheels securely when stationary

Specifications

TypeChair & Furniture Accessories
BrandUnique Bargains

Questions about this item

Do the plastic twin wheels on these M8×15 mm casters wear out and need replacing?

The wheels are moulded plastic on a zinc-alloy hub; they roll on a plain bore rather than sealed bearings, so after extended daily use the tread can flatten or develop flat spots and the caster would be replaced as a unit.

What load limit is reached first when the chair is used continuously?

Each caster is rated for 20 kg, but the set is calculated at 60 kg total because uneven floors often leave only three casters carrying weight.

How much noise and heat do the brakes and swivel produce during all-day rolling?

The supplier describes the roll as smooth and quiet; the plastic-on-metal swivel and brake lever generate negligible heat and only faint rolling sound on hard floors.

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