Rollerball Conversion Kit

Onoto

£105

The Rollerball Conversion Kit comes with the front unit, refill and spring. Available for Magna and Excel pens in Acrylic Platinum Plated, Acrylic Gold-Plated, All Sterling Silver and All Silver Gold-Plated. And for Scholar Pens in Acrylic Gold Plated and Acrylic Palladium Plated. PLEASE NOTE: These Conversion Kits are not compatible with a Magna/Excel heavyweight pen. If in doubt as to whether this will fit your pen, please contact us before making your purchase.

Onoto's own words, read from their page.

Buy from OnotoPrice seen 2026-09-04. Affiliate link.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as THE ONOTO PEN COMPANY LIMITED, number 03744683. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
No majority shareholding traced outside the UK. Companies House.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.