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•Spinfit CP360 is best for True Wireless Earphones.
Spinfit CP360 eartip has a bore size of 3.6 mm. Spinfit CP360 Fits true wireless earphone with soundport nozzle 4 mm ~ 5.5 mm.•The package includes two sizes of silicone replacement eartips. (Small/Extra Small)•Aims for a tighter fit, perfect for exercising, outstanding isolation and sound enhancement. And no more ear irritations!•ISO10993 certified. Medical Grade Silicon made. High level of hygiene and skin freindly material.•Perfectly fit in the wireless charging case.*Do not fit Bose, Erato, Bragi and Creative TWS*