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					Model:U+File | 
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| Material | N i T i | 
| Length | 21mm 25mm 31mm | 
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					U-File | 
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| Austenite NiTi alloy | |
| Safe guide tip | |
| Variable progressive taper | |
| Average stress cross section | |
| Positive continuous rotation | |
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            | 
					A-File | 
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| Austenite NiTi alloy | |
| Unique offset mass of rotation | |
| Pitch of screw thread | |
| Positive continuous rotation | |
| Single file to prepare the root canal | |
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					T-File | 
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| Austenite NiTi alloy | |
| One file glide path solution | |
| Once to reach work legth | |
| Variable progressive taper | |
| Easy to touch root tip | |
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					V-File | 
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| Austenite NiTi alloy | |
| Reciprocating | |
| Regressive taper design to prevent unneccessary loss of tooth substance in the coronal part | |
| Suitable for narrow curved canal | |
| Single file to prepare the root canal | |
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					W-File | 
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| Austenite Niti alloy | |
| New-Tec cross section design | |
| Reciprocation motion with appropriate motor | |
| Three kinds of single file system | |
| Covers a wider range of canal morphologies | |
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