Free UK Tracked Shipping on Orders Over £50

Join 30 Years of Diving Excellence! Rated 4.8 Stars by Our Customers!

Cressi  |  SKU: RC559510

Cressi Kai Knife

£43.99
Tax included

Delivery & Returns

Delivery Information

We offer free tracked UK standard delivery on orders over £50. 

Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.

International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.

Estimated delivery times are shown during checkout and reflect your chosen delivery method. More Details

Returns Information

If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!

Mike's Dive Store offer an extended returns policy of 60 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!

Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return. More Details

Help & Support

Need Help?
Our expert diving team is here to assist with your order, sizing, or product selection. We're divers ourselves, ready to support you!

Chat Hours:
Monday - Friday: 09:00 AM - 05:50 PM GMT

Prefer a call back? Just request it through the chat bubble!

Store Location
Mike's Dive Store
113 Power Rd, Chiswick, West London, W4 5PY
Local: (020) 8994 6006

Store Hours
Mon - Fri: 10 AM - 6 PM
Sat: 10 AM - 5 PM
Sun: Closed
Bank Holidays: Store & Warehouse Closed (no dispatch)

Online Video Consultations
Unable to visit us? Book a live video consultation for tailored advice on equipment, fitting, or specialized gear. Get expert guidance from our team, face-to-face. Book Now

For more answers, visit our FAQs.


The Kai Knife offers a number of features that make it an ideal tool for divers. The blade is crafted from 1.4060 martensitic stainless steel, hardened to hrc 55/56 for an extremely sharp and honed blade.

Its v-shaped cross-section design ensures maximum cutting power while the saw, line cutter, and loop for the leash enable easy access to all necessary items. The idroglider gold black surface treatment also increases resistance to corrosion in marine environments, making it reliable and durable for long-term use.

Additionally, the 1000 d ballistic nylon sheath is designed with neoprene leg bands and armbands in several sizes for a perfect fit no matter what size your body is. Whether you’re a professional diver or an amateur, the Kai Knife is the perfect companion for underwater explorations.

FEATURES:
  • Blade length: 10 cm - 3.9 inch
  • Total length: 23 cm - 9 inch
  • Blade width: 30 mm - 1.2 inch
  • Blade thicknesses: 4 mm - 0.15 inch
  • Knive-only weight: 140 gr - 0.3 lb
  • Weight with sheath: 180 gr - 0.39 lb