These Korda Dark Matter Balancing Weights are made from pure tungsten and are designed to sit over the barrel of a size 11 swivel. They are ideal for counterbalancing buoyant carp hook baits, particularly with Chod, Hinge-Stiff, and Spinner rigs, offering a neat alternative to putty. The weights have an excellent size-to-weight ratio, contributing to a neater final rig. They are easily interchangeable, do not wear, and are reusable, ensuring longevity if not lost. Available in various weights, including 0.50g, they are a practical solution for fishing in waters with crayfish as they cannot be pulled off the rig. These weights are designed to fit Korda size 11 swivels, and a Krimp Tool is recommended for secure fitting. The color is Zilver.