The Good Blue R615 Flex Fountain Pen - Raw Aluminium


Single-mindedly designed to produce beautiful flex lines and precision engineered to be your pen of choice. 

The R615 is designed to be as simple as possible - but no simpler. The overall form is described by a single elliptical curve and a flat plane - Beauty through mathematics. The flat sections line up to make a roll stop across three components - a technique also used by Swiss watchmakers.

The feed design is fine-tuned to bring you two options: an efficient and reliable injection-molded plastic feed or an innovative polymer version should you prefer wetter ink flow - available in two colours.

The centre of mass of the pen sits in the brass grip section to allow a neutral balance and better control of writing pressure for flex.

A ‘fine’ width nib that flexes happily to 1.4mm with the standard plastic machined feed that keeps the ink flowing. It’s tipped, so works great for everyday writing too. The polymer feed comes in either Black or White colours and adds more juiciness to the ink flow and drawn and written line.

The barrel and cap are machined from high grade 6082 aluminium and left raw so they age gracefully and meaningfully.

Our grip section is machined from CZ121 brass and is untreated. Over time it will age and develop a unique patina personalised to you. We think this is wonderful, but should you want to restore it to the original, all it needs is a gentle polish with any standard brass polish and a clean cloth.


Length: 150mm

Length uncapped: 138mm (inc. nib)

Diameter: 16mm

Section diameter: 10.5 mm, pinch point 10.25mm 

Weight: 45.23 gms

Weight uncapped: 35.20 gms with nib unit

Materials: 6082 aluminium and CZ121 brass, untreated

Delivery Information

Delivery Information

We are shipping as normal but some international postal deliveries are still experiencing some delays due to Covid-19 effects.

Please also take time to read our post-Brexit information page if you are outside the UK to see what will happen now with tax and import duty.

UK Orders under £25 will cost either £1.99 (2nd Class) or £2.99 (1st Class) - you can choose at checkout. 1st Class is estimated to be 1-2 days and 2nd Class is estimated to be 3-5 days.

UK Orders over £25 will get free delivery - either 2nd (if under £50), Royal Mail 1st (between £50 and £175) or Royal Mail Special Delivery (if over £175)

You can also upgrade delivery at checkout. Special Delivery is Next Day Guaranteed by 1pm, this excludes the weekends/bank holidays and is dependent on an item being in stock and ordered before 3pm. Please check with us if you are unsure by emailing

Orders made before 3pm Monday-Friday will generally be dispatched on the same day. Orders made after 3pm on Friday will be dispatched the following Monday. 

Overseas Delivery

Overseas orders under £20 will cost £3.99 for UNTRACKED Airmail. You can also upgrade.

Overseas orders over £20 will cost £7.99 for TRACKED Airmail. You can also upgrade to a Courier service at checkout, the cost will depend on whether you are in Europe (£27.50) or outside £47.50.

VAT and Currency

UK customers should see prices including UK VAT on each product page. It may take a few seconds to load the Inc and Ex Vat prices due to how our system has to be set to work for overseas customers too. If only one price is showing, it will be the EX Vat price and may be due your IP address displaying as overseas.

All prices are shown in British pounds (£) but you can select other currencies in the top right dropdown. You can pay in your own currency and you will know the exact price you'll pay on your card. You will probably still have to pay some form of import duty to your local tax authorities when your parcel arrives.

Delayed Deliveries

For deliveries in the UK, Royal Mail suggests 1-4 working days for parcels to arrive. 
For deliveries in Europe, Royal Mail suggest 7-10 working days for parcels to arrive.
For deliveries to the Rest of the World, Royal Mail suggests up to 21 working days for parcels to arrive. 

If you find that your order has taken longer than the suggested delivery time, before you contact us please ensure that you have checked with your local sorting office to see if they have your order. They will not always leave you a card to inform you that there is a parcel waiting for you, but you can generally call them and they can advise if your parcel if it is there. 

In the case that your order has been returned back to us because it was left unclaimed or the delivery address was wrong or incomplete, it will be the customers' responsibility to pay for rescheduled delivery.

Brexit Changes & Considerations

International Shipping Information

Since the UK left the EU in January 2021, the way international shipments are dealt with by Customs has changed. Please take the time to read about it so you know what to expect with cross-border deliveries