Description
The NIC Hand K-Flex (Twist Flex) File is a stainless steel hand-use endodontic instrument with a rhombic/triangular cross-section that combines K-File cutting efficiency with greater flexibility for curved canals. The twisted stainless steel design produces sharper cutting edges and more flexibility than standard K-Files — ideal for moderately curved canals. Use as an upgrade from standard K-Files when more flexibility is needed.
Key Features
- Material: Stainless steel
- ISO color-coded for fast chairside identification
- Pre-sterilized blister pack available — single-use option for infection control
- Compression-fit shank with electropolished cutting flutes
- Three working lengths — 21 mm, 25 mm, 31 mm
- Autoclavable at 121 °C / 15 min or 134 °C / 3–5 min
- 6 files per pack
ISO Color Codes
- 06 Pink · 08 Grey · 10 Purple · 15 White · 20 Yellow · 25 Red · 30 Blue · 35 Green · 40 Black · 45 White · 50 Yellow · 55 Red · 60 Blue
How To Use
- Scout the canal with #10 K-File to establish patency to working length
- Pre-curve the file by hand to follow canal anatomy in curved canals
- Use a balanced-force or watch-winding technique with quarter-turn motion
- Step ISO sizes (#10 → #15 → #20 → #25 …) progressively to working width
- Irrigate copiously with NaOCl between each file size
NIC Quality
NIC files are 100% compliant with ISO standards (accuracy ± 0.02 mm), produced by Shenzhen Superline Technology — a premium endodontic instruments manufacturer since 2002. CE 0197, FDA-cleared, ISO 13485 quality system.
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The NIC Hand K-Flex (Twist Flex) File is a stainless steel hand-use endodontic instrument with a rhombic/triangular cross-section that combines K-File cutting efficiency with greater flexibility for curved canals. The twisted stainless steel design produces sharper cutting edges and more flexibility than standard K-Files — ideal for moderately curved canals. Use as an upgrade from standard K-Files when more flexibility is needed.
Key Features
- Material: Stainless steel
- ISO color-coded for fast chairside identification
- Pre-sterilized blister pack available — single-use option for infection control
- Compression-fit shank with electropolished cutting flutes
- Three working lengths — 21 mm, 25 mm, 31 mm
- Autoclavable at 121 °C / 15 min or 134 °C / 3–5 min
- 6 files per pack
ISO Color Codes
- 06 Pink · 08 Grey · 10 Purple · 15 White · 20 Yellow · 25 Red · 30 Blue · 35 Green · 40 Black · 45 White · 50 Yellow · 55 Red · 60 Blue
How To Use
- Scout the canal with #10 K-File to establish patency to working length
- Pre-curve the file by hand to follow canal anatomy in curved canals
- Use a balanced-force or watch-winding technique with quarter-turn motion
- Step ISO sizes (#10 → #15 → #20 → #25 …) progressively to working width
- Irrigate copiously with NaOCl between each file size
NIC Quality
NIC files are 100% compliant with ISO standards (accuracy ± 0.02 mm), produced by Shenzhen Superline Technology — a premium endodontic instruments manufacturer since 2002. CE 0197, FDA-cleared, ISO 13485 quality system.
| Selected Variant | 21 MM / 25 |
| Price | $15.99 |
| SKU | TFK 021 025 |
| Brand | NIC |
| Product Type | Endo Files |
| Weight | 0.08 kg |
| Availability | ● In Stock |
| Barcode | 6944835122589 |
No additional files available for this product.








