Magnetic & Bearing Fidget Spinner Rings

With outer diameters of 33.7mm to 41mm and inner bearing bores of ~17mm to 20mm (US Ring Size 7 to 10), they function as index/thumb EDC knuckle spinner rings as well as desktop haptic rings.

Yes. Our rotary fiber laser fixture can engrave serial numbers or brand wordmarks along the inner bore or outer chamfered rim at 100 pcs MOQ.

Because the 16 micro magnets (Ø4×1.2mm to Ø4×2mm) are enclosed inside a CNC aluminum/brass housing riding on a thin-section ball bearing, acoustic output stays below 35 dB—providing tactile finger feedback that is virtually inaudible across a conference table.

FS-014, FS-069, FS-135, and FS-140 use 16 opposing neodymium magnets plus a thin-wall bearing for magnetic ratchet clicks, whereas FS-119 (Planetary 8-Bead Ring) uses 8 exposed Ø8mm hardened steel balls in an open cage that functions as a massage roller and planetary bearing spinner.

No. The inner finger-contact ring is machined from passivated 304 stainless steel or hard-anodized 6063 aluminum, preventing direct skin contact with raw brass and ensuring hypoallergenic, RoHS/REACH-compliant wear.

Yes. Threaded retention rings allow advanced EDC users to remove or flip magnet pairs inside the 8+8 magnet pockets to customize click stiffness or switch to free-spinning bearing mode.

FS-014, FS-069, and FS-135 utilize a precision Ø27×Ø19.95×4mm thin-section ball bearing (~19.95mm inner finger bore, US Size 10), while FS-140 uses a compact Ø23×Ø17×4mm bearing (~17mm inner bore, US Size 6.5–7).

Yes. Many EDC buyers wear oversized knuckle rings on a braided leather or titanium bead necklace cord when not spinning them; we can include a waxed cord necklace in each EVA pouch for +$0.25/unit.

Yes! You can combine any of the 5 ring models in increments of 20 pcs per SKU to build a 100-piece assorted mechanical ring order.