Empty Peptide Pen Kit UK: What You Actually Need (Pen, Cartridges and Case)

Short answer: An empty peptide pen kit, also called a reusable peptide pen kit, is a V3 reusable pen, 3mL cartridges and a case to carry it in, with an optional cap opener. V3 Pens UK sells every part as empty hardware, so you build the kit that suits you. Individual items run from £3.50 to £20, and a full single pen kit comes to £43.50 before delivery.

Prices and availability checked on 2 November 2026.

What is an empty peptide pen kit?

A peptide pen kit is a reusable pen body plus the accessories that go with it. "Empty" means every part is hardware only. Nothing from V3 Pens UK includes needles, medication or contents of any kind, and cartridges are sold separately from the pen and the bundle. Some UK "peptide pen kit" listings bundle a pen with a cartridge and pen needles. V3 Pens UK kits are different: hardware only, no needles, no contents, and you choose each part yourself. Always check the listing to see exactly what is in the box.

The four parts of a V3 kit

Part	What it is	Price
V3 Reusable Pen	Anodised aluminium body with an adjustable dial and clip-on lid, in a choice of colours	£20
3mL Steam Sterilised Glass Cartridges x 10	Standard 3mL glass cartridges, listed for V1, V2 and V3 pens	£12
Deluxe Hard Case or Duo Soft Case	Storage for carrying your pen and keeping it tidy	£13 or £10
Metal Vial Cap Opener	Reusable stainless steel flip-off cap removal tool (optional)	£3.50

The pen: the one part every kit needs

The V3 pen is the core of the kit. It has an anodised aluminium body, an adjustable dial, a clip-on lid and compatibility with standard 3mL cartridges. It is available in a choice of colours and priced at £20. The pen is built to be reused, so you buy it once and swap cartridges over time. For the generation differences, see our V1 vs V2 vs V3 comparison.

Peptide pen cartridges (3mL)

The pen and the pen and case bundle do not include cartridges. Our 3mL steam sterilised glass cartridges come in a pack of 10 for £12 and are listed for V1, V2 and V3 pens. For loading and looking after the pen, see How to Load and Maintain Your V3 Pen.

Choosing a peptide pen case: Deluxe hard case or Duo soft case

We sell two V3 cases, and they suit different ways of carrying a pen. Both are simple, everyday storage cases for keeping a pen tidy and together, so treat your pen with normal care whichever you choose.

	Deluxe Hard Case	Duo Two Pen Soft Case
Price	£13	£10
Build	Hard shell with a matte black finish	Soft case
Closure	Snap closure	Zip close
Inside	Moulded foam insert that holds the pen in place, plus extra moulded accessory slots	Two separate compartments so pens do not knock together
Holds	One V3 pen in any colour, plus accessories	Two pens side by side, approximately 18cm x 6cm x 4cm
Colours	Black	Light Grey, Black, Baby Blue, Baby Pink
Best for	A firmer, more structured case for one pen and accessories	Light travel, or carrying a spare pen or two pens together

If you want a firmer, more structured case for a single pen, choose the Deluxe Hard Case. If you own two pens, or want a lighter case with a choice of colours, the V3 Duo Case is the better fit. Pens are not included with either case. You can browse both in the V3 Pen Cases collection.

The V3 Pen and Deluxe Hard Case Bundle pairs a pen with the Deluxe case for £28. Bought separately they cost £33, so the bundle saves £5. The bundle case is black.

Do you need the cap opener?

No. It is an optional £3.50 extra. It is a reusable stainless steel tool for removing flip-off caps. Our guide to vial cap opener vs removing by hand explains when it helps.

Four ready-made kit builds

Kit	What is in it	Total before delivery
Starter	1 pen	£20
Carry kit	Pen and Deluxe Hard Case bundle (£28) plus 10 cartridges (£12)	£40
Full single pen kit	Pen and Deluxe Hard Case bundle (£28), 10 cartridges (£12), cap opener (£3.50)	£43.50
Two pen kit	2 pens (£40), Duo Case (£10), 10 cartridges (£12)	£62

Orders over £50, such as the two pen kit, can also be split into 3 interest-free instalments with Klarna at checkout, subject to Klarna's approval.

Browse everything in the V3 Full Collection or the V3 Accessories collection.

What is not in any V3 Pens UK kit

Every item is an empty hardware accessory. No kit includes needles, medication, compounds or any consumable substance, and cartridges are never included with the pen or the bundle. Buyers must be 18 or over and located in the UK. Delivery is a flat rate £5 via Evri Tracked to mainland UK addresses only, with an estimated 2 to 3 business days from dispatch. For the legal position on empty hardware, read Is the V3 Pen Legal in the UK? and for buying advice see Where to Buy a V3 Peptide Pen in the UK.

Frequently asked questions

What is in an empty peptide pen kit from V3 Pens UK?

Every item is sold as empty hardware: a V3 reusable pen, 3mL glass cartridges, a storage case and an optional cap opener. Nothing includes needles, medication or contents, and cartridges are sold separately from the pen and the bundle.

How much does a full V3 pen kit cost?

A full single pen kit costs £43.50 before delivery: the pen and Deluxe Hard Case bundle at £28, a pack of 10 cartridges at £12 and the cap opener at £3.50.

What is the difference between the Deluxe Hard Case and the Duo Case?

The Deluxe Hard Case is a £13 hard shell case with a moulded foam insert for one pen and accessories. The Duo Case is a £10 soft zip-close case with two compartments for two pens, in four colours.

Can the V3 Duo Case hold two pens?

Yes. It has two internal compartments so two pens sit side by side without knocking together. It measures approximately 18cm x 6cm x 4cm, and pens are not included.

Is it cheaper to buy the pen and case as a bundle?

Yes. The pen and Deluxe Hard Case bundle is £28, compared with £33 when bought separately, a saving of £5.

Is an empty peptide pen kit legal to buy in the UK?

Yes. A kit made up of an empty pen body, an empty case and empty accessories, with no needles, medication or controlled substances, is legal to buy in the UK. What is added afterwards is the buyer's own responsibility.