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Ruku Ellipse Scuba Blades
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$7.50 Shipping NZ Wide
Dispatched within 24 hours of ordering
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30 day returns if you’re not happy with your purchase

Ruku Ellipse Scuba Blades

Handmade composite blades developed and tested in New Zealand

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Ruku has been proudly supplying Ruku blades to the New Zealand market for many years, and they always get asked if you can use Ruku blades for scuba diving, well the answer is yes! Not only can you use the long blades but now there is a dedicated blade just for scuba.

The goals of the Ruku scuba blade have been to create a blade that performed over a wider range of user’s and giving the diver a choice of blade strengths that relates to their strength and body weight. A one fin that fits all is not right, so now you have choice.

If you struggle with plastic fins with fatigue or the weight of them from kicking or do you get sore ankles or knees? then a Ruku composite blade will make kicking effortless and this make your diving more enjoyable.

Composite blades have been used in the Freediving and Spearfishing market for many years and the key advantages are   they are more efficient. With this technology in a scuba fin you can now kick less for more power and you will travel further on less air, you become more efficient in the water plus having a blade you can kick effortlessly then your diving will be so  much more enjoyable.

The camo designs have been taken from nature’s own environment, now looking good with performance and being efficient are all rolled up into one product.

The Scuba blade is sold in a closed heal pocket, the reason behind this is the closed heal pocket transfers more power  to the blade giving you greater propulsion forward.

Ruku Blades will fit most closed heal pockets, Picasso, Mares, Seatec, Omer Millenium so if you have your own pockets you can fit your own.

The following pockets require Ruku to modify the blade at manufacturing, which can lead to a delay in delivery.

Omer Stingray, Pathos

When you order your blades and pockets they will be delivered made up.

Colours Available:
Pacific Blue
Black Camo
Rocky Brown
Seaweed Green
Razor Red

Ruku’s are a handmade composite blade, and proudly New Zealand made. The Blades come with a 3 year warranty

Selecting a Blade
When selecting your blade most importantly you need to consider your body weight, any injuries including ankles and legs. If you are unsure please call us for help on 09-3770-896
All blades are fitted at no extra cost and we offer free delivery within New Zealand.
Ruku Model Intended User by body weight
  • Soft           Under 75kg
  • Medium     75kg +95kg
  • Hard           95kg +
  If you are unsure please ask our team 09-3770896

Have a read of a testimonial from Dave Mullins who uses the freediving models of Ruku.

Testimonial from Dave Mullins

Dave Mullins is New Zealand’s deepest diver, he holds 17 national records and six freediving world records. To add to his accolades he holds a world record for a striped marlin which weighed 156.6kg’s

Up until a couple of years ago I swam with flat plastic fins. These performed well enough underwater but the lack of angle was starting to injure my ankles, particularly in competitions that involved lots of surface swimming.

In freediving I use very high angle monofins to reduce knee angle, both when kicking and when in the glide phase of the dive. After looking at the local options I bought a pair of Ruku's because the blades were angled well and they are made in New Zealand. I’ve always felt that the angle, length and flexural characteristics of a fin are far more important than the material used. Carbon fibre is lighter than glass but ultimately I haven’t been able to find much difference between the materials in real performance terms.

My first Rukus were Medium stiffness and while they felt good on the surface, they seemed a bit too long and had a tendency to fold in the middle under power. This wasn’t an issue on shallow dives but showed up when I went deeper, especially in Wellington conditions with a thick suit and lots of weight. It felt like they reached a point where the fin tips couldn’t keep up and ended up trailing behind the rest of the blade rather than actively pushing water. Changing to a pair of slightly shorter and much stiffer Commercial blades fixed the power issue but the trade-off was a hard slog when swimming long distances. The blades were really built to sprint and carry heavy loads.

When I spoke to Ruku I was told a redesign was on the way and after I gave some feedback we decided to experiment with a couple of variations. The aim was to keep the fins fairly soft but able to perform on surface sprints and deep dives without folding. It was an interesting exercise as a re-design of the internal structure yielded some fins that looked nearly identical to the previous model but behaved quite differently. The version with slightly reduced length and a steeper taper built into the laminate clearly outperformed both the originals and the much shorter comparison blades. They seemed to be effective across a wider range of speed and power, settling into a nice ‘jogging’ pace on the surface but still keeping up with harder kicking on sprints and deep ascents.

To be fair I had given Ruku a pretty tough brief after using my original Rukus since I weigh 100kg, operate mostly in cold water, favour soft fins and enjoy deep diving. This awkward combination of preferences and constraints probably meant that I ran up against equipment limits many divers just wouldn’t notice. I imagine it would be quite easy to slap together some tapered fibreglass sheets and churn out moderately functional fin blades that satisfy enough of the spearo population to stay commercially viable. It’s a lot more difficult to produce something that holds up in a more demanding freediving context and Ruku’s approach to continual improvement has been very rewarding.

The new blades should satisfy anybody looking for a good balance between surface swimming and depth performance, even at the serious end of recreational diving. 
Dave Mullins

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PHONE 09 377 0896
100 Gaunt Street
Monday to Friday
9am till 5.30pm
New Zealand
Saturday & Sunday
9am till 5.00pm