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| Distal diameter, mm | Length of tapered area, mm | Proximal diameter, mm | Manufacturer | |
| All the devices were made of stainless steel. | ||||
| N | 0.21 | 125 | 0.64 | Asahi Intecc |
| A | 0.26 | 270 | 0.45 | Boston Scientific Corporation |
| B | 0.26 | 175 | 0.45 | Micro-Tech |
