Gasfins Nitro Fin-plugs  are covered by a six month guarantee against cracking or popping out the board under normal surfing conditions.

SIX MONTH GUARANTEE
Terms and conditions – Nitro Fin Plugs
The 6 month guarantee is available on nitro fin-plugs in South Africa only, unless otherwise stated, valid from the date of purchase. Gasfins will provide, free of charge, replacement fin-plugs for those damaged within the guarantee period.
This offer applies to new fin-plugs only, purchased through approved fitment centre’s. It does not apply to surfboards purchased second hand or through private sales. Your guarantee card must be presented to validate your claim.
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Claims procedure: If your fin-plugs are damaged you should return your board to the shop/shaper listed on your guarantee card for assessment.
What is covered? This guarantee is limited to replacement parts for your fin-plugs, excluding any labour costs if your fin-plugs are damaged under normal surfing conditions.
What is not covered? Any damage caused by submerged hazards, collision, abnormal surfing conditions or accidents occurring during transportation. Any other loss suffered, including personal injury is not covered by this guarantee

Through research and development with some of the worlds leading surfboard shapers, Gasfins new NITRO fin-plug system is taking plug-in fins to a whole new level.

Designed specifically to reduce the flex experienced in the base of your fins, common with standard plug-in systems, but still giving you the versatility of being able to change your fins for different surf conditions.
Even with the extra glass reinforcement in the base of the fins and in the plugs, it still allows the tip of your fins to flex, giving you that extra thrust and stability that glass-on fins would offer, allowing more acceleration through turns and tighter turns in the pocket without losing speed,
The NITRO plug system is available in a variety of colours from basic nylon to polycarbonate hybrids, with extra long grub screws that lengthen the life of the plug making it possible to change your fins continuously without the worry of the threads stripping.

Strengths:
Unique “lock & hold” design resulting in less flex in the base of your fin.
Lightest and easiest fin system to install
Most common fin system in the world
Does not interfere with the flex of the tail and rocker of your board, specifically designed into the board by your shaper
Can be used on all shapes and bottom deck contours
Our unique 6 months guarantee (see terms and conditions)
The nitro plug system is available in a variety of colours from glass-filled nylon to polycarbonate hybrids, with extra long grub screws that lengthen the life of the plug making it possible to change your fins continuously without the worry of the threads stripping.