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                        | The morse taper middle sheath of without fiat cauda |  
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			| Model  Specification | Taper of shank | Morse taper hole | Size |  
			| D | D1 | L | L1 | S |  
			| MTA3-2 | M3 | M2 | 23.825 | 17.780 | 82 | 12 | 22 |  
			| MTA4-2 | M4 | 31.267 | 27 |  
			| MTA4-3 | M3 | 23.825 | 98 | 13 |  
			| MTA5-3 | M5 | 44.399 | 41 |  
			| MTA5-4 | M4 | 31.267 | 124 | 13 |  
			| MTA6-4 | M6 | 63.348 | 55 |  
			| MTA6-5 | M5 | 44.399 | 160 | 20 |  |  |  |  |