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Brand new and high quality
Fit for Filament size:1.75mm or 3mm
Screw diameter: M6 Screw Thread
Size:25.1mm x 6mm
Material : stainless steel
Inner diameter: 
2mm for 1.75mm filament
3.2mm for 3.00mm filament
 
Packing Included:
1X Hotend Throat

http://img2.shanghai-zhuting.com/img/img201607/ebay/HG/SH-HG-2231/eaby/SH-HG-2231-4.jpg
http://img2.shanghai-zhuting.com/img/img201607/ebay/HG/SH-HG-2273/eaby/SH-HG-2273-YJGS%20.jpg