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"BONE" The Ultimate Long Tapered Barrel - 4mm - Fine

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"The Ultimate Long Tapered Barrel" - 4mm

Our brand new diamond bit range for the Ultimate user. 

Our new range with cooling grooves making them last 1.5 times as long, premium finish giving them featherlight soft touch for the client but with ultimate performance. 

This long tapered barrel piece is the perfect shape and size for removing pterygium, lifting the nail fold and reducing cracks & Fissures of the foot.  It also great for reducing calluses as its length covers larger areas.

  • Diamond Bit 
  • 100% Tungsten Steel
  • Cuticle Bit 
  • Long Tapered Barrel shape 
  • 4mm 
  • Cooling grooves
  • Fine Grade 
  • Suitable for Manicure & Pedicure 
  • Step 1 piece for cuticles 
  • Also suitable for E-Pedi, callus & fissure reduction
  • Perfect for separating the skin from the nail plate 
  • Standard shaft width of 3/32" 
  • Fits all E-file Machines 

The bit must be cleaned periodically to remain sharp by following the manufacturer's instructions. E-file bits usually last 2-3 months but this can vary dependent on how busy you are. 


  • Use warm soapy water to remove the dust and product debris from within the grits flutes and teeth. 
  • Once the bit is fully clean you can use your preferred sterilising method. 
  • We suggest using our "Willow Spray & Go!" system
  • If soaking in Barbicide please only steep for the recommended time, over-steeping can dull your drill bits. 
  • Once sterilised, dry the pieces and store in your Willow Container 
  • Alternatively, after cleaning your pieces with warm soapy water you can use a UV sterilising cabinet. 




"BONE" The Ultimate Long Tapered Barrel - 4mm - Fine