Rotary Thread File Starter Kit - RTK1.1

Q: How fine is the grit? Will it leave a nearly polished finish or it coarse and fast cutting?

Mid-fine, It can restore threads to as smooth and polished as the fastener was as shown in the ads photo see here: https://m.media-amazon.com/images/S/aplus-media/sc/8898eaed-e41b-483c-a11f-66ec549f79a0.__CR0,0,220,220_PT0_SX220_V1___.jpg

Q: how small a hole will this work in? like 1/4-3/8? m8, m10, m12?

For the RT1 7/16 inch diameter & and for the RT2 7/8 inch diameter are the smallest hole sizes. I hope this helps and we appreciate you as our customer!

4.5/5

Product ID: 528911184

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Details

Brand
Rotary Thread
Included Components
Threads
Manufacturer
Rotary Thread
UPC
855232006661
Global Trade Identification Number

🔧All-in-one internal & external threading

⏱️Repairs threads in under 1 minute

⚙️60° V-angle universal fit

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Description

⚙️ Fix Threads Fast, Work Smarter, Not Harder!

MATERIAL MASTERY - Works flawlessly on metals, hardened metals, ceramics, glass, and plastics—your all-material thread fixer.
SWIFT THREAD REVIVAL - Restore damaged bolts and nuts in under a minute, eliminating downtime and guesswork.
SEAMLESS TOOL INTEGRATION - No more switching—handle both internal and external threads effortlessly with one kit.
TRUSTED PRECISION SUPPORT - US-patented engineering backed by 24/7 customer care ensures reliability on every project.
UNIVERSAL THREAD COMPATIBILITY - Unique 60° V-angle design fits inch, metric, and pipe threads for unmatched versatility.

The Rotary Thread File Starter Kit RTK1.1 is a compact, lightweight (45g) toolset designed to quickly restore damaged threads on bolts and nuts. Featuring a patented 60° V-angle rotary file, it works on both internal and external threads across inch, metric, and pipe standards. Compatible with a wide range of materials including metals, ceramics, and plastics, this all-in-one kit streamlines repairs for DIYers and professionals alike, backed by dedicated 24/7 customer support.