The Penultimate - Fine | Safety Round Top Barrel | Carbide E-file Bit – Black DLC
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 our premium Black DLC (Diamond-Like Carbon) coating for maximum lifespan & performance.
| Grit | Fine |
| Shape | Safety Round Top Barrel |
| Cut | Cross-cut Carbide |
| Material | Tungsten Carbide |
| Coating | Black DLC (Diamond-Like Carbon) |
| Speed | 22,000–25,000 RPM (removal) / 15,000 RPM (refining) |
| Rotation | Left & right-handed |
| Sterilisation | Autoclave safe |
Our most advanced coating — the Black DLC is in a different league:
Best for: High-volume techs and professionals who want maximum value, durability, and the confidence of the longest-lasting bit in the range.
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.
Sign up for exclusive offers, original stories, events and more.


