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Installation Guide
How do I attach the barb to my spear shaft?expand_more
Installing the Protir Sub detachable barb is simple. Slide the adapter base over the tip of your threaded shaft and tighten it using a 10mm wrench. Ensure the locking pin is aligned perpendicular to the shaft for optimal hold.
Tip: Apply a drop of medium-strength thread locker (blue Loctite) to the threads to prevent vibration loosening during travel.
Do I need special tools for assembly?expand_more
No specialized marine tools are required. You will only need a standard 10mm open-end wrench to secure the adapter. The barb mechanism itself is tool-free for field detachment.
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Compatibility
Will this fit a 7mm or 7.5mm shaft?expand_more
Yes! Our modular system comes with adapters for both 7mm (9/32") and 7.5mm shafts. Please select your specific shaft diameter at checkout to ensure we send the correct spacer kit.
What thread patterns are supported?expand_more
We support the two most common global standards:
• 6mm Metric: Common on European brands (Rob Allen, Pathos, Salvimar).
• 5/16-24 Thread: Common on American brands (Riffe, JBL, AB Biller).
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Maintenance & Care
How do I prevent rust and corrosion?expand_more
Our barbs are made from 17-4 PH stainless steel, which is highly resistant to corrosion. However, to maximize longevity, always rinse the detachable assembly with fresh water after every dive. Store it dry and separated from the shaft if storing for long periods.
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Shipping & Returns
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Still have questions?
Can't find the answer you're looking for? Our support team is here to help with your spearfishing setup.