The Penultimate - Fine | Safety Round Top Barrel | Carbide E-file Bit – Purple
Pickup available at Willow Academy HQ
Usually ready in 24 hours
The go-to SAFETY refining bit for gel polish removal, infills & precise product reduction — with a specialist Purple Titanium coating for oxidisation protection & longer lifespan.
| Grit | Fine |
| Shape | Safety Round Top Barrel |
| Cut | Cross-cut Carbide |
| Material | Tungsten Carbide |
| Coating | Purple Speciality (Titanium) |
| Speed | 22,000–25,000 RPM (removal) / 15,000 RPM (refining) |
| Rotation | Left & right-handed |
| Sterilisation | Autoclave safe |
The Purple coating features Titanium Aluminium Nitride (TiAlN) properties — a specialist coating engineered for durability and hygiene-conscious techs:
Best for: Techs who use steeping as part of their sanitation process and want a longer-lasting, more resilient bit.
The Penultimate Fine is for controlled light removal and refinement — not debulking. If you need to remove bulk first, pair it with the Penny Medium or Poppy Coarse before finishing with the Penultimate Fine.
Pickup available, Usually ready in 24 hours
Unit 2 Norman Business Park, 61 Thorby Avenue
March PE15 0AR
United Kingdom
We continually test, measure and compare all our e-file bits so you can trust them to perform when you need them most. The Willow Guarantee means that we will refund or replace any e-file bit that doesn't do its job.
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