SpinFit CP145 for IEM - M - Patented Silicone Eartips for Replacement, Secure Fit and Supreme Comfort (2 Pairs) (for Nozzle Diameter from 5-6mm)
Eartip has a bore size of 4.5 mm which fits earphones that have sound port nozzle 5-6mm. (Mostly w/ BA drivers) Comparable to Comply T-500.