Spikes for sliding gates can be custom-made.

Even if you strengthen security on top of the fence, custom-made gates are the standard, and since the width and height requirements vary, installing anti-climb devices is cumbersome, and ultimately, intruders end up breaking in from there.

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GIZAGIZA Black installed on white wall with traditional Japanese tile roof – discreet security with cultural harmony

Ninja Deterrent

In Japan, security spikes are called "Shinobi Gaeshi 忍び返し", which means literally “Ninja Deterrent™” in Japanese. The origin of "Shinobi Gaeshi" dates back to the era of Ninjas ”忍”. These spikes were used to prevent Ninjas from entering buildings and attacking the occupants…

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FAQs

What forms of Payment do you accept?

We accept major credit cards such as Visa, MasterCard, and American Express, or direct payments through PayPal, Google Pay, Shop Pay, or Apple Pay. If you have some troubles, please feel free to contact us.

Where do you ship to?

We ship to almost every country in the world and have customers in over 70 countries. (The only countries we don't currently ship to are Albania, Algeria, Bosnia and Herzegovina, Colombia, India, Indonesia, Kosovo, Malaysia, Morocco, Pakistan, Slovenia, Tunisia, Vietnam.)

How long does shipping take? What shipping do you use?

All orders are shipped via FedEx, DHL, or EMS. Please allow 2-4 business days for orders to be processed after your purchase is complete.

Do you sell wholesale?

We primarily sell directly to our customers through our website, but we also sell through a few select boutiques, which we screen on a case-by-case basis. If you would like more information, please contact us with information about your shop.

Can Otani Ninja Deterrent carry out the installation?

Unfortunately, we cannot. However, the installation is quite simple. We recommend using stainless steel fasteners to secure each section with at least 3 screws—one on each end and another in the middle. If you want to learn more, please check tips.

Any qualified contractor or even a good handyman should have no problem installing these beautiful, expertly crafted Japanese security/fence spikes.

Feel free to contact us about installation; we can give you advice.