You will be purchasing YIREN/Wing Sung Compatible (3.4mm outlet) Sized Fountain Pen Ink Converter, genuine UK SOLD.
I have a listing for a International Standard (2.6mm) sized converter, which is item no. 192227345137, this listing is for the 3.4mm version.
Converters hold over 50% more than 'regular' sized ink cartridges, and is known to increase the effective flow of the pen.
FAST & FREE UK Postage, check out my shop for compatible pens.
Please bear in mind that this converter is on the lower end of of the converter spectrum, and work well with equal quality YIREN and Wing Sung Fountain Pens that take a converter. Do not buy if you expect a Mont Blanc or Waterman build quality. Will certainly NOT fit: Aurora, Cross, Lamy, Parker, Pilot, Platinum, Sailor, Sheaffer, Jinhao, Baoer, Super Slim/Mini Type Fountain Pens, or any other 'International Standard' fountain pen.
Please also note the 'shoulders' of the converter might clash with the barrel of your pen, please ask for more measurements.
Diameter (widest point): 7.2mm
Length from outlet to end: 72mm
Outlet diameter: 3.4mm (Yiren/WS Standard)
If you have any concerns if this will fit your pen, please 'Contact Seller'.
List of compatible pen brands, all brands will have exceptions and ones marked with a '+' have many exceptions:
Will NOT fit these pens:
Any Baoer cartridge/converter pen
Any Jinhao cartridge/converter pen
Any HERO cartridge/converter pen
Aerometric filler/Piston Filler pens
Wing Sung #3007
Customers NOT from the UK regarding combined postage for multiple items:
Before your purchase, please request a total so you do not have to pay £3.00/£4.00 per item (base price depends on location). Each additional item will cost £0.50. Any other questions regarding International Postage, please send me a message I am happy to help!