The Kossak – Fine | 2- 3 months
5.0 / 5.0
2 reviewsPickup available at Willow Academy HQ
Usually ready in 24 hours
A precision-engineered diamond Flame bit designed for controlled cuticle prep work.
The Kossak Fine is built for accurate, targeted cuticle prep, combining a classic flame shape with a twisted burr design to enhance control, efficiency, and access in delicate areas. A Step 1 prep bit, designed to assist in lifting, separating and cleaning the cuticle pocket with precision.
What sets it apart is its twisted burr structure, which allows for:
More controlled contact with the skin
Momentary pauses during exfoliation
Improved efficiency in tighter areas
Longer in length for those who like a little more to play with
This is ideal for technicians who want greater control and feedback during prep.
Grit Level: Fine
Function: Cuticle prep / lifting / separation / Pocket cleaning
Stage of Use: Prep (Step 1)
Shape: Slender Longer Flame
Head Size: 1.1mm length - 2mm circumference
Material: Diamond Coated Tungsten Steel
Design: Twisted burr (enhanced control structure)
Finish: Lower level cooling groove design
Rotation: Suitable for left & right-handed use
Shaft Size: 3/32" universal fit
Recommended Speed: 9,000 – 11,000 RPM
Pressure: Very light, controlled
Lifespan: Approx. 2–3 months
Designed for precision prep, The Kossak Fine allows you to work safely and effectively in delicate areas.
Helps lifts the proximal nail fold without trauma
Separates cuticle from the nail plate cleanly
Reaches deep into the side walls with control
Cleans the cuticle pocket
Prepares the area for product application and long-lasting adhesion
Diamond Abrasive Finish – Controlled, Gentle Exfoliation
Designed to gently exfoliate non-living tissue without cutting
Provides controlled abrasion for safe prep work
Cooling grooves help reduce heat build-up and improve comfort
Maintains consistent performance across services
Unlike carbide bits, this is not designed to remove product —
It is designed to lift, clean and prepare.
Use at the start of your service (prep stage)
Work at 9,000–11,000 RPM
Use very light touch - no pushing or pressure
Gently guide around the cuticle area and side walls in the direction thats relevant to your rotations
Do not use it on the nail plate.
The Flame sits at the start of your Willow prep system:
Step 1: The Kossak Fine – Lift & separate cuticle
Step 2: Ball – remove non-living tissue or Manual Nippers
Step 3: Diamond Polisher/Silicon Polisher - Polishing with cuticle oil
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.