Features：

1. Easy to replace the nib by twisting it out and back. Please remove the cartridge or converter before twising the nib out.

2. These nibs are not standard size, they are only compatible with Asvine fountain pen P36 Series

3. Package: 3 pcs silver nibs with black section ( 1 EF, 1 F, 1 M )

4. Please remove the converter before twist the nib section out. If you can not screw the nib section out, please send us a message, we will send you the replacement part to fix this.