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3M

3M Diamond Files-4 Piece Set Medium Grit 74 Microns

Part # 133.928 Out of Stock Weight -- lb -- g
Current price $50.40

The 3M Flexible Diamond File Set delivers consistent, precise material removal for jewelers and metalsmiths working with hard materials, including hardened steel, carbide, ceramics, glass, and gemstones. Each set includes 4 color-coded red files in a medium grit of 74 microns, offering an effective balance between stock removal and surface refinement. The flexible diamond-coated surface conforms slightly to workpiece contours, making these files well suited for detailed bench work and hard-to-reach areas.

The set includes four distinct profiles — two flat files, one half-round file, and one narrow flat file — covering a range of filing tasks from broad surface work to tight grooves and curved surfaces. Made in England by 3M, these files are a reliable addition to any professional jeweler's bench.

Features

  • Medium grit diamond abrasive at 74 microns for efficient stock removal with controlled finish
  • Flexible construction allows the file to follow contours and complex surfaces
  • Four distinct profiles included to handle a variety of filing applications
  • Color-coded red for quick grit identification at the bench
  • Suitable for hard materials including carbide, hardened steel, ceramics, and stone
  • Made in England by 3M

Specifications

Brand 3M
Grit Medium – 74 microns
Color Code Red
Pieces per Set 4
Origin Made in England

What's Included

  • File No. 1 – Flat, 1‑1/2" × 3/4"
  • File No. 2 – Flat, 1‑3/4" × 1/2"
  • File No. 3 – Half Round, 1‑3/4" × 1/2"
  • File No. 4 – Flat Narrow, 2‑1/2" × 1/4"
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Cancer and Reproductive Harm. www.P65warnings.ca.gov.
Brand
3M
Part #
133.928
Type
Files
Dimensions
10 in x 5.5 in x 1 in
Grit
Medium – 74 microns
Color Code
Red
Pieces per Set
4