Whit a MODERN jinhao converter and a jinhao cartridge make this jumbo cartridge
1-cut some jinhao cartridge head
2- put into the converter section with some silicon grease
Fit my jinhao 599 but i need to add another 599 ring
fit Jinhao 250 carbon model / baoer 507
dont fit Jinhao 450
jumbo cartridge size 80mm / 2.5 ml
I USE THIS NOW 10 DAYS WITH NO BAD ISSUES
1-cut some jinhao cartridge head
2- put into the converter section with some silicon grease
Fit my jinhao 599 but i need to add another 599 ring
fit Jinhao 250 carbon model / baoer 507
dont fit Jinhao 450
jumbo cartridge size 80mm / 2.5 ml
I USE THIS NOW 10 DAYS WITH NO BAD ISSUES
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