Target Japan Kosuzu Iwao Diamond G4 90% Tungsten Swiss Point Steel Tip Darts

DIAMOND G4 - Functional Modern Aesthetic

Developed in collaboration with Kosuzu Iwao (いわお小鈴), the DIAMOND G4 redefines the “Diamond” concept with a perfect blend of beauty, precision, and performance.

This fourth-generation model captures Kosuzu’s evolving spirit - confident, bold, and radiant on and off the stage.

Triple Diamond Ring Design – Fashion Meets Function

At the heart of the DIAMOND GEN 4 lies its signature triple diamond ring motif, inspired by stacked jewellery rings.

This design creates a fashionable, layered look, combining artistic beauty with functional precision:

• The three diamond rings each feature distinct groove depths and shapes, creating varied grip textures that enhance control and prevent slipping.
• The stacked-ring structure allows the fingers to naturally recognize grip position, supporting consistent throws and stable release.

Like fine jewellery, the triple ring pattern shines with elegance—a perfect fusion of strength and sophistication.

Signature Red Line Accents – A Modern Diamond Aesthetic

Accented with vivid red lines, the barrel reflects Kosuzu’s favourite colour palette, tying the design back to the vibrant art direction of the DIAMOND series.

The red detailing not only enhances visual impact but also embodies energy, confidence, and passion, mirroring the fiery determination of the player herself.

Grip & Shape – Precision in Every Throw

• Straight Barrel Profile: Designed for versatility and balance, this shape offers smooth handling and adaptability — easy to use for both beginners and advanced players.
• Front Section: Softened shark cuts provide a smooth yet responsive touch, perfect for controlled release.
• Centre Section: Signature diamond-pattern cuts integrated with ring grooves ensure precise feedback and visual flair.
• Rear Section: Alternating mild shark cuts offer moderate yet firm grip traction, making it easy to find and maintain the perfect hold.

The entire barrel is carefully arranged to provide grip stability across all positions, supporting a wide range of throwing styles.

A Dazzling Fusion of Form and Function

The DIAMOND G4 continues the legacy of the DIAMOND series — combining competitive performance with fashion-inspired design.

Its sleek black body, bold red accents, and geometric precision embody the brilliance of its name, symbolizing both strength and individuality.

Stylish, versatile, and powerful — the DIAMOND G4 is the next evolution of brilliance, ready to shine in every game.

Delivery Information

At Double Top Dart Shop, we pride ourselves on fast, secure, and reliable shipping. All orders are carefully packed at our UK warehouse by our dedicated team. Whether you're ordering from within the UK or overseas, we offer a range of delivery services to suit your needs—each with tracking where available.

Please see below for a full breakdown of our UK and international delivery options.

UK Delivery

We offer three UK delivery options to suit your needs. All orders are dispatched from our UK warehouse with full tracking included. Delivery times may vary slightly depending on your location within the UK.

Standard Delivery – Royal Mail Tracked 48
This is our most cost-effective delivery option. Orders sent via Royal Mail Tracked 48 typically arrive within 2–3 working days for mainland UK. For customers in the Highlands, Islands, or Northern Ireland, delivery may take an additional 1–2 days.

Express Delivery – Next Working Day
If you need your order quickly, choose our Express option. We use Royal Mail Tracked 24 and DPD Express Pack 5 or Pack 1, all of which aim to deliver your parcel the next working day. These services are tracked and reliable for time-sensitive deliveries. For customers in the Highlands, Islands, or Northern Ireland, delivery may take an additional 1–2 days. You can choose to have your parcel delivered to a safe space or local pick up shop using your tracking number. If you have your parcel delivered to your specified safe place you are then responsible for the item as soon as it has been delivered to that location.

Special Guaranteed Delivery – Timed Next Day
For guaranteed next-day delivery, we offer Royal Mail Special Delivery and DPD Delivery by 10:30. These premium services are only available to mainland UK addresses and guarantee delivery by the next working day (by 10:30 AM with DPD). For non-mainland addresses, delivery typically takes 2 working days.

International Delivery

We ship internationally using reliable, fully tracked services. Your delivery method will depend on the parcel weight and your location. All international orders are shipped from the UK.

Royal Mail International
For parcels weighing under 2kg, we use Royal Mail International services. This is a cost-effective solution with tracking available for most destinations. Delivery times vary depending on the destination country but generally range from 5 to 14 working days.

DHL & DPD International – Over 2kg
For orders over 2kg, we use premium couriers including DHL and DPD. We offer two options through DHL:

• DHL Express – our fastest international service with priority handling and the shortest transit times.
• DHL Economy – a more affordable alternative with slightly longer delivery times.

DPD may also be used depending on destination, availability, and shipping conditions.

Exact delivery times depend on your country and chosen service. For specific estimates, please contact our customer service team at orders@doubletopdartshop.com.

Please note: If you are ordering from outside the UK and have not paid import duty or VAT at checkout, you may be required to pay local taxes and customs charges at the point of delivery. These charges are set by your local authorities and are the responsibility of the recipient.