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The new PROGRESSIVE BLACK slings by CETMA COMPOSITES are made in Italy with the highest quality and purest materials, and have been designed to complete the range of slings for spearguns.
INTERNAL HOLE 1.5 mm
Unlike the MAGNUM, the new PROGRESSIVE BLACK have a decidedly progressive behavior, and are ideal for setting up traditional single-, single- and double-circular-sling spearguns.
In this case, a single layer of rubber with additives is used to ensure gradual recovery of deformation, typical of a progressive elastic band.
PROGRESSIVE BLACKs perform very well at different elongation factors: the table shows the forces developed for different elongation factors, this data is useful for setting up your speargun.