Here's a new Spinfit eartip  : CP360 V.2 model
Feature :

• Best for TRUE WIRELESS earphones. Eartip has a bore size of 3.6 mm. Fits TWS with soundport nozzle 4 mm ~ 5.5 mm. Compatible with Samsung, Jabra, Sennheiser, Sony WF-1000XM3, Echo Buds, B&O, Sol Republic, Pioneer, RHA, JVC, NuForce, Powerbeats, Anker and most True Wireless earphones.

• ISO10993 certified. Medical Grade Silicon made. High level of hygiene and skin freindly material.

• Aims for a tighter fit, perfect for exercising, outstanding isolation and sound enhancement. No more ear irritations. And will be perfectly fit in the wireless charging case

• Ergonomically designed with the ability to flex in all direction and conform to the ear canal

• Perfectly fit in the wireless charging case.

• DO NOT fit Bose's, Erato TWS, Bragi , Creative TWS , OI Tent Six

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  We have 4 sizes of CP360 model : SS/S (Pink/Mint nozzle) / S/M (Mint/Green nozzle) / M/L (Green/Blue nozzle) / L/XL (Blue/Navy nozzle) which we clearly explain the dimension in the photos of each size.
• You will get one pack of the size you choose. Package includes 2 pairs of silicone replacement eartips in different size (4 pieces).

• CP360 is recommended for long nozzle. If your TWS earphones has short nozzle, we recommend you to buy Spinfit CP1025 instead to avoid fitting issue with the case.
  

• All images shown are for illustration purpose only, actual product may vary in color.