Weight will always depend on the application. We have a variety of spring buttons available, including solid headed spring buttons. Even with a hollow spring button, the spring is quite strong. We do ship internationally with volume, though we require the customer to provide the Fedex/DHL/UPS Label along with pre-paying for the order
Would such a System be strong enough to be used on a rubber powered speargun? It would make transporting spearguns so much easier. You could just put your speargun in a backpack instead of having to carry this 1 meter long pipe around.
We are not ourselves spear fishermen. We work with many entrepreneurs who find new users for our capabilities and build businesses around those products.
It is possible our spring buttons would work on PVC tubing. You can buy the spring buttons on www.TestriteAluminum.com and try it for yourself. If you need 25 or more and are asking for us to build for you, reach out to us at www.TestriteOEM.com and click request fast quotation and let us know what you have in mind. FYI - The thicker the wall of your tube, whatever material, the harder it becomes to depress a spring button. We have made custom versions of our B locks for PVC tubing, which you can see here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5Px2PyGcSE0.html
