Help with buying catch springs

I need to buy a catch spring that can hold up to 26 kg or more. I ordered a 10kg and 16 kg longshot nerf turf springs a while back, but I totally forgot that the catch spring would not work, since the highest one is made for 16kg, not 26. A while after that, I lost the bugger.

That is where I ask you guys where I can buy a longshot catch spring that strong. Please give me a link, or at least somewhere to go. I only need a catch spring, and I don't really want anything else. I know drac used 2 jet catch springs, but they only come with other stuff, which I really don't want or need.