Imperial Stem Size: Our caster are standard 3/8" with 16 TPI,Coarse Thread (US), the stud diameter is 3/8"-16UNC and the stud length is 0.79"(20mm), if your stem socket is METRIC M10, this caster is not suitable, please check before buy.
2 Pack Single Lockable Casters: The package includes 2 Standard caster and 2 CASTERS constructed with brake pedal, it can brake the rotation of the caster only, but the stem is still moveable for direction.
Quiet & Smooth Rolling: Made of high-tech elastic polyurethane, with internal bearings are quick rolling and the surface is sleek,wouldn't get stuck by crumbs,hair, wouldn't damage on floors.
Versatile Casters:Transform your flight cases, instrument cases, display equipment, dollies, tool boxes, light machinery, and furniture into practical pieces that can be moves with ease using our premium set of 4 caster
Valued Purchase: The Hirate branded color-boxed package comes with set of 4 caster(2 with Brake, other 2 without) and few 3/8"-16 thread Hex Nuts.