PRS Rollerball adapter - Bock 250

Our rollerball adapter converts your fountain pen to a rollerball by simply threading this into the section in place of a Bock 250 nib unit. Compatible with any pen that uses a Bock 250 nib unit. Internally, this uses a Schmidt PRS rollerball tip, which allows you to use your favorite ink in a cartridge or converter, with a rollerball tip! And yes, a converter can actually pull ink in through the rollerball tip!

Includes a Schmidt PRS rollerball unit, and a Bock 250 adapter sleeve.