High gauge 316 stainless steel springs (thick and strong) on the market that will outlast anything. The clip handle allow to clip the loop on to a line when getting in/out of a boat or using it to attach to a float line and tow around when freediving. The grips are also the same size as a western Rock lobster so you can quickly eye up a cray without pulling out the gauge. Also the loop is the perfect size for a 76mm cray. This stops you munching cackers. The angle on the loop is allowing you to get right behind the cray. Best quality cable is used to avoid fraying.