LOUPS are ready-made soft attachments that replace heavy stainless steel shackles on racing andcruising boats. Weight savings on large offshore boats can be as much as 200lb. (91kg). They'restrong and light, constructed of multiple coils of tough Dyneema covered with Spectra one ofthe most durable materials made. An annealing process equalizes the load on all coils. Colored tracerson the cover specify LOUPS strength by indicating the number of Dyneema coils. Most LOUPSconfigurations are created by taking the block apart, or if the block can't be opened, by using a pincalled a "Dogbone" to join the LOUP to itself. When fitting hardware, choose the LOUPS that matchesthe attachment method shown in the chart.