FREE UK Delivery Over £50

Medium Diamond Files

Eternal Tools

Our 600 grit diamond needle files are unique, they have been designed and produced with precision in mind. Use for roughing out and removing heavy pitting or finishing and shaping of hard materials. Use our coarser 220 grit diamond files for removal of material. 

Shapes available in 220 grit:

  • Triangle (220 grit)
  • Round (220 grit)
  • Knife edge (220 grit)

Shapes available in 600 grit:

  • Barette (600 grit)
  • Crossing (600 grit)
  • Flat (600 grit)
  • Half Round (600 grit)
  • Oval (600 grit)
  • Square (600 grit)
  • Warding (600 grit)

View Product Video

Earn 0 reward points
£0.00 £7.95


Grit Size

Out Of Stock
Add To Wishlist

Want to be notified when this product is back in stock?
Complete the form below and we'll send you an email when it is.


How to use our Medium Diamond Needle Files

Our diamond needle files can be used either wet or dry, they will last longer when used wet but it is understood that this isn't always practical when working on a delicate watch or clock part. As with all our products allow the tool to do the work and don't apply too much pressure especially if working on a corner or sharp edge.

The many uses for our diamond files:

  • Use the tip for detailed areas such as ring shanks
  • Removing excess solder
  • Shaping precious stones for jewellery
  • Sharpening carbide cutting tools
  • Enlarging holes
  • Fitting clock and watch glasses
  • Refacing clock & pallets
  • Re-pivoting clock and watches
  • Beveling cut crystal glasses
  • Sharpening household objects
  • Cross graining burnishing tools
  • Sharpening fishing hooks


Diamond 600 grit is precisely electroplated onto a steel blank with a plastic handle

  • Overall length: 140mm
  • Shaft: 3mm
  • Diamond length: 70mm
  • Handle diameter: 4mm

Customer Reviews

Lightweight, precise & easy to control in those tricky areas. Excellent buy, I use them everywhere.
Gfsdij CGI CVC see y HB<br/>Vgfffffgyrddf
Good file but the handle is too small to be ideal for large hands.
Exactly as described. Cant wait to get using this diamond file!

Questions & Answers

Ask a question using the form below

Display my question on your website (untick to keep private)

Other questions and our answers

I’d like to cut and smooth some tungsten carbide , will these discs do the job?


The diamond slitting discs would be perfect for the cutting of your carbide.  To smooth, try our 600 grit diamond files. To polish the tungsten carbide you can use our diamond grinding paste. 

The item has been added to your basket

Continue Shopping
Proceed To Checkout

" A fantastic service every single time. Delivery is prompt and the range of items is excellent "

" I really like the quality of your tools, each and every one of them! "

" Thank you for providing great tools at reasonable prices, great info, advice and fab service "

" All I can say is WOW! Very very impressed and a big thank you to your company "

" Your service was top notch, as are your products and we'll be ordering again soon "

" A fantastic service every single time. Delivery is prompt and the range of items is excellent "

Sign up for exclusive discounts and news