NTR Zipline Spring Brake Extra Long 6.6FT, Kids Backyard Heavy Duty Zip Line Brake System/Stop/Stopper, High-Strength Compression Stainless Steel Spring, Ziplines Parts for up to 3/8 Inch Cable

Good quality, works well. Used it for a zip line for a 5 year old birthday party - worked well even with adults taking a turn

We rip on our zipline, this thing does the trick for stopping and absorbing the hit!!

Works well. The children like the way it gently slows them down.

I bought this to install on my zip line that I put up for my grandchildren. It is not as strong as I thought it was going to be and that was a little disappointing. It works but I would not recommend for use on a zip line stop.

Perfect for zip line , this has slowed m and my kids down to a safe stop all summer and winter , easy to use and the length is correct as advertised, great quality and value for the cost .

I had to add this compression spring to the kids' backyard zipline. One spring did not slow the kids down enough. I cannot fault spring #1 since the zipline is 100+ feet long and fairly steep so the kids fly down. They hit the deceleration zone quite fast. The extra spring and four (4) long bungies solved the problem. The kids were adamant they did not want to go slower and they actually relish the "bounce back" from the "arrest system."Both springs show no rust in our rather harsh environment.

I used a 3/8 cable and drilled the rubber to a larger hole. My cable has about a 7 deg slope, so speed is so great. With my nearly 200lb mass at 7 deg, it stops me very well. The stopping isn't so abrupt that it is uncomfortable, but certainly does the trick. I highly recommend this to anyone adding a zipline for your kids to use.

This brake helped a lot with the zipline I bought. We put it on after we had already installed it with the little brake that came with the kit. The 5 year old and 9 year old grand kids were not stopping well with the other brake, and this brake added some gentler braking. We just had to take the cable down, thread it through the spring brake, and then put it back up. I am hoping it won't rust-- if it doesn't, it will be pretty perfect. This brake was installed on a 250 lb. weight limit cable.

Meets description. Good quality and works well

super, passt alles - Top Produkt - und insbesondere auch der Kundenservice!

Used it on a Zipline , put 2 on because 1 is just not long enough , 1 is 5 ft , but with 2 gives you almost 11 ft which when compressed still keeps away from tree/ pole without hitting it, . With 1 you would swing right into the tree/pole . Our Zipline is about 135 ft between 2 trees with a 3% drop and a child about 80lbs is well away from bottom tree with room to spare.

this little spring will fool you on how fast it will stop you, again make sure the zip line is set up right for the spring to work as it will !!!!

Works for slower speeds/gradient, otherwise need additional brake. Ours was only17m long at 4degree slope and you would swing high when it fully compressed against the stop block. Eventually one of the rubber ends broke off but it still works.