29 New Needle Files for Jewelers & Watchmakers This is a new set of 29 needle files. These are for filing wood, gold, silver, platinum, plastic and many other materials. These have better performance on hard to file surfaces. These have little or no clogging, a simple knock is enough to remove the chips. These files are highly resistant to corrosion and longer life than standard files. You receive: 6 files that measure approximately 4" 6 files that measure approximately 5.5" 5 files that measure approximately 7 1/4" 12 files that measure approximately 5 1/2"