Yellow Safety Stopper

The almost-flat upper part gives a clean stop to your carabiner, while the lower part, with its conical shape, allows your lanyard cable to be “expelled” towards the outside, with no grip to get it stuck. Following prototype tests, a diameter wider than a tennis ball’s (75mm vs 65mm) was chosen. Finally, the bright fluorescent yellow color makes it more visible. 

 

It works perfectly with a 10 to 12mm rope. It is possible to use it with smaller ropes down to 8mm. 

 

Regarding the mounting process, the stopper is divided in two parts. A simple knot is placed in its center, and 3 stainless steel screws (standard cross-head) make it easy to finish putting it in place. It is made out of ABS, a strong plastic used for example to make LEGOs: after all, we are just big kids playing in the water!    

 

Designed and tested by Swiss record holder Pascal Berger (-131m VWT ).