The Ocean Hunter Dyneema Bridles with beads is an extremely strong fibre, offering maximum strength with minimum weight. The material is Ultra High Molecular Weight Polyethylene (UHMWPE). These bridles use Ocean Hunter 2mm 400lb dyneema. To maximise the usage of each bridle, ensure that there are no sharp edges on your spear notches and fastening points to prevent any fraying of the bridle.